/****************************************************************/
/*  original filename prototype.js                        */
/****************************************************************/


/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/


    //svb 6.20.08
    Trim = 'no'


var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();
/****************************************************************/
/*  original filename effects.js                        */
/****************************************************************/


// script.aculo.us effects.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/ 

// converts rgb() and #xxx to #xxxxxx format,  
// returns self (or first argument) if not convertable  
String.prototype.parseColor = function() {  
  var color = '#';
  if (this.slice(0,4) == 'rgb(') {  
    var cols = this.slice(4,this.length-1).split(',');  
    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
  } else {  
    if (this.slice(0,1) == '#') {  
      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
      if (this.length==7) color = this.toLowerCase();  
    }  
  }  
  return (color.length==7 ? color : (arguments[0] || this));  
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
        Element.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);  
  element.setStyle({fontSize: (percent/100) + 'em'});   
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

Element.getInlineOpacity = function(element){
  return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + 0.5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
    },
    pulse: function(pos, pulses) { 
      pulses = pulses || 5; 
      return (
        ((pos % (1/pulses)) * pulses).round() == 0 ? 
              ((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
        );
    },
    spring: function(pos) { 
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
    
    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character), 
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') || 
        Object.isFunction(element)) && 
       (element.length))
      elements = element;
    else
      elements = $(element).childNodes;
      
    var options = Object.extend({
      speed: 0.1,
      delay: 0.0
    }, arguments[2] || { });
    var masterDelay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
    });
  },
  PAIRS: {
    'slide':  ['SlideDown','SlideUp'],
    'blind':  ['BlindDown','BlindUp'],
    'appear': ['Appear','Fade']
  },
  toggle: function(element, effect) {
    element = $(element);
    effect = (effect || 'appear').toLowerCase();
    var options = Object.extend({
      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ? 
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
  initialize: function() {
    this.effects  = [];
    this.interval = null;    
  },
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  add: function(effect) {
    var timestamp = new Date().getTime();
    
    var position = Object.isString(effect.options.queue) ? 
      effect.options.queue : effect.options.queue.position;
    
    switch(position) {
      case 'front':
        // move unstarted effects after this effect  
        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
            e.startOn  += effect.finishOn;
            e.finishOn += effect.finishOn;
          });
        break;
      case 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        break;
      case 'end':
        // start effect after last queued effect has finished
        timestamp = this.effects.pluck('finishOn').max() || timestamp;
        break;
    }
    
    effect.startOn  += timestamp;
    effect.finishOn += timestamp;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);
    
    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  remove: function(effect) {
    this.effects = this.effects.reject(function(e) { return e==effect });
    if (this.effects.length == 0) {
      clearInterval(this.interval);
      this.interval = null;
    }
  },
  loop: function() {
    var timePos = new Date().getTime();
    for(var i=0, len=this.effects.length;i<len;i++) 
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;
    
    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
    this.currentFrame = 0;
    this.state        = 'idle';
    this.startOn      = this.options.delay*1000;
    this.finishOn     = this.startOn+(this.options.duration*1000);
    this.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;
    
    eval('this.render = function(pos){ '+
      'if (this.state=="idle"){this.state="running";'+
      codeForEvent(this.options,'beforeSetup')+
      (this.setup ? 'this.setup();':'')+ 
      codeForEvent(this.options,'afterSetup')+
      '};if (this.state=="running"){'+
      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
      'this.position=pos;'+
      codeForEvent(this.options,'beforeUpdate')+
      (this.update ? 'this.update(pos);':'')+
      codeForEvent(this.options,'afterUpdate')+
      '}}');
    
    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).add(this);
  },
  loop: function(timePos) {
    if (timePos >= this.startOn) {
      if (timePos >= this.finishOn) {
        this.render(1.0);
        this.cancel();
        this.event('beforeFinish');
        if (this.finish) this.finish(); 
        this.event('afterFinish');
        return;  
      }
      var pos   = (timePos - this.startOn) / this.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).remove(this);
    this.state = 'finished';
  },
  event: function(eventName) {
    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
    if (this.options[eventName]) this.options[eventName](this);
  },
  inspect: function() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    this.effects.invoke('render', position);
  },
  finish: function(position) {
    this.effects.each( function(effect) {
      effect.render(1.0);
      effect.cancel();
      effect.event('beforeFinish');
      if (effect.finish) effect.finish(position);
      effect.event('afterFinish');
    });
  }
});

Effect.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(), 
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) : 
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    // make this work on IE on elements without 'layout'
    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
      this.element.setStyle({zoom: 1});
    var options = Object.extend({
      from: this.element.getOpacity() || 0.0,
      to:   1.0
    }, arguments[1] || { });
    this.start(options);
  },
  update: function(position) {
    this.element.setOpacity(position);
  }
});

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
    });
  }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
  return new Effect.Move(element, 
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};

Effect.Scale = Class.create(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      scaleX: true,
      scaleY: true,
      scaleContent: true,
      scaleFromCenter: false,
      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
      scaleFrom: 100.0,
      scaleTo:   percent
    }, arguments[2] || { });
    this.start(options);
  },
  setup: function() {
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = this.element.getStyle('position');
    
    this.originalStyle = { };
    ['top','left','width','height','fontSize'].each( function(k) {
      this.originalStyle[k] = this.element.style[k];
    }.bind(this));
      
    this.originalTop  = this.element.offsetTop;
    this.originalLeft = this.element.offsetLeft;
    
    var fontSize = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].each( function(fontSizeType) {
      if (fontSize.indexOf(fontSizeType)>0) {
        this.fontSize     = parseFloat(fontSize);
        this.fontSizeType = fontSizeType;
      }
    }.bind(this));
    
    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
    
    this.dims = null;
    if (this.options.scaleMode=='box')
      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
    if (/^content/.test(this.options.scaleMode))
      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
    if (!this.dims)
      this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
  },
  update: function(position) {
    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
    if (this.options.scaleContent && this.fontSize)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + 'px';
    if (this.options.scaleFromCenter) {
      var topd  = (height - this.dims[0])/2;
      var leftd = (width  - this.dims[1])/2;
      if (this.elementPositioning == 'absolute') {
        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
      } else {
        if (this.options.scaleY) d.top = -topd + 'px';
        if (this.options.scaleX) d.left = -leftd + 'px';
      }
    }
    this.element.setStyle(d);
  }
});

Effect.Highlight = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    // Prevent executing on elements not in the layout flow
    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldStyle = { };
    if (!this.options.keepBackgroundImage) {
      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
      this.element.setStyle({backgroundImage: 'none'});
    }
    if (!this.options.endcolor)
      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
    if (!this.options.restorecolor)
      this.options.restorecolor = this.element.getStyle('background-color');
    // init color calculations
    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
  },
  update: function(position) {
    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
  },
  finish: function() {
    this.element.setStyle(Object.extend(this.oldStyle, {
      backgroundColor: this.options.restorecolor
    }));
  }
});

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
    scrollOffsets = document.viewport.getScrollOffsets(),
    elementOffsets = $(element).cumulativeOffset(),
    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();  

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1] > max ? max : elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()) }
  );
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  var options = Object.extend({
    from: element.getOpacity() || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) { 
      if (effect.options.to!=0) return;
      effect.element.hide().setStyle({opacity: oldOpacity}); 
    }
  }, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show(); 
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = { 
    opacity: element.getInlineOpacity(), 
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  return new Effect.Parallel(
   [ new Effect.Scale(element, 200, 
      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
     Object.extend({ duration: 1.0, 
      beforeSetupInternal: function(effect) {
        Position.absolutize(effect.effects[0].element)
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

Effect.BlindUp = function(element) {
  element = $(element);
  element.makeClipping();
  return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false, 
      scaleX: false, 
      restoreAfterFinish: true,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping();
      } 
    }, arguments[1] || { })
  );
};

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    duration: 0.4,
    from: 0,
    transition: Effect.Transitions.flicker,
    afterFinishInternal: function(effect) {
      new Effect.Scale(effect.element, 1, { 
        duration: 0.3, scaleFromCenter: true,
        scaleX: false, scaleContent: false, restoreAfterFinish: true,
        beforeSetup: function(effect) { 
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      })
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned(); 
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        } 
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}) }}) }}) }}) }}) }});
};

Effect.SlideDown = function(element) {
  element = $(element).cleanWhitespace();
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false, 
    scaleFrom: window.opera ? 0 : 1,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
    }, arguments[1] || { })
  );
};

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false, 
    scaleX: false, 
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },  
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
    }
   }, arguments[1] || { })
  );
};

// Bug in opera makes the TD containing this element expand for a instance after finish 
Effect.Squish = function(element) {
  return new Effect.Scale(element, window.opera ? 1 : 0, { 
    restoreAfterFinish: true,
    beforeSetup: function(effect) {
      effect.element.makeClipping(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping(); 
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.full
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();    
  var initialMoveX, initialMoveY;
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0; 
      break;
    case 'top-right':
      initialMoveX = dims.width;
      initialMoveY = moveY = 0;
      moveX = -dims.width;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = dims.height;
      moveY = -dims.height;
      break;
    case 'bottom-right':
      initialMoveX = dims.width;
      initialMoveY = dims.height;
      moveX = -dims.width;
      moveY = -dims.height;
      break;
    case 'center':
      initialMoveX = dims.width / 2;
      initialMoveY = dims.height / 2;
      moveX = -dims.width / 2;
      moveY = -dims.height / 2;
      break;
  }
  
  return new Effect.Move(element, {
    x: initialMoveX,
    y: initialMoveY,
    duration: 0.01, 
    beforeSetup: function(effect) {
      effect.element.hide().makeClipping().makePositioned();
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
               effect.effects[0].element.setStyle({height: '0px'}).show(); 
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
             }
           }, options)
      )
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.none
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = dims.width;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = dims.height;
      break;
    case 'bottom-right':
      moveX = dims.width;
      moveY = dims.height;
      break;
    case 'center':  
      moveX = dims.width / 2;
      moveY = dims.height / 2;
      break;
  }
  
  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({            
         beforeStartInternal: function(effect) {
           effect.effects[0].element.makePositioned().makeClipping(); 
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { };
  var oldOpacity = element.getInlineOpacity();
  var transition = options.transition || Effect.Transitions.sinoidal;
  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
  reverser.bind(transition);
  return new Effect.Opacity(element, 
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
    }, options), {transition: reverser}));
};

Effect.Fold = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height };
  element.makeClipping();
  return new Effect.Scale(element, 5, Object.extend({   
    scaleContent: false,
    scaleX: false,
    afterFinishInternal: function(effect) {
    new Effect.Scale(element, 1, { 
      scaleContent: false, 
      scaleY: false,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });
    
    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        }
      }
    }
    this.start(options);
  },
  
  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return { 
        style: property.camelize(), 
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      )
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] = 
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) + 
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');
  
Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }
  
  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]); 
  });
  
  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
      results[property] = css[property];
      return results;
    });
    if (!styles.opacity) styles.opacity = element.getOpacity();
    return styles;
  };
};

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element)
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) { 
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    }
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);

/****************************************************************/
/*  original filename controls.js                        */
/****************************************************************/


// script.aculo.us controls.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2007 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
//           (c) 2005-2007 Jon Tirsen (http://www.tirsen.com)
// Contributors:
//  Richard Livsey
//  Rahul Bhargava
//  Rob Wills
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

// Autocompleter.Base handles all the autocompletion functionality 
// that's independent of the data source for autocompletion. This
// includes drawing the autocompletion menu, observing keyboard
// and mouse events, and similar.
//
// Specific autocompleters need to provide, at the very least, 
// a getUpdatedChoices function that will be invoked every time
// the text inside the monitored textbox changes. This method 
// should get the text for which to provide autocompletion by
// invoking this.getToken(), NOT by directly accessing
// this.element.value. This is to allow incremental tokenized
// autocompletion. Specific auto-completion logic (AJAX, etc)
// belongs in getUpdatedChoices.
//
// Tokenized incremental autocompletion is enabled automatically
// when an autocompleter is instantiated with the 'tokens' option
// in the options parameter, e.g.:
// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
// will incrementally autocomplete with a comma as the token.
// Additionally, ',' in the above example can be replaced with
// a token array, e.g. { tokens: [',', '\n'] } which
// enables autocompletion on multiple tokens. This is most 
// useful when one of the tokens is \n (a newline), as it 
// allows smart autocompletion after linebreaks.

if(typeof Effect == 'undefined')
  throw("controls.js requires including script.aculo.us' effects.js library");

var Autocompleter = { }
Autocompleter.Base = Class.create({
  baseInitialize: function(element, update, options) {
    element          = $(element)
    this.element     = element; 
    this.update      = $(update);  
    this.hasFocus    = false; 
    this.changed     = false; 
    this.active      = false; 
    this.index       = 0;     
    this.entryCount  = 0;
    this.oldElementValue = this.element.value;

    if(this.setOptions)
      this.setOptions(options);
    else
      this.options = options || { };

    this.options.paramName    = this.options.paramName || this.element.name;
    this.options.tokens       = this.options.tokens || [];
    this.options.frequency    = this.options.frequency || 0.4;
    this.options.minChars     = this.options.minChars || 1;
    this.options.onShow       = this.options.onShow || 
      function(element, update){ 
        if(!update.style.position || update.style.position=='absolute') {
          update.style.position = 'absolute';
          Position.clone(element, update, {
            setHeight: false, 
            offsetTop: element.offsetHeight
          });
        }
        Effect.Appear(update,{duration:0.15});
      };
    this.options.onHide = this.options.onHide || 
      function(element, update){ new Effect.Fade(update,{duration:0.15}) };

    if(typeof(this.options.tokens) == 'string') 
      this.options.tokens = new Array(this.options.tokens);
    // Force carriage returns as token delimiters anyway
    if (!this.options.tokens.include('\n'))
      this.options.tokens.push('\n');

    this.observer = null;
    
    this.element.setAttribute('autocomplete','off');

    Element.hide(this.update);

    Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
    Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
  },

  show: function() {
    if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
    if(!this.iefix && 
      (Prototype.Browser.IE) &&
      (Element.getStyle(this.update, 'position')=='absolute')) {
      new Insertion.After(this.update, 
       '<iframe id="' + this.update.id + '_iefix" '+
       'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
       'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
      this.iefix = $(this.update.id+'_iefix');
    }
    if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
  },
  
  fixIEOverlapping: function() {
    Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
    this.iefix.style.zIndex = 1;
    this.update.style.zIndex = 2;
    Element.show(this.iefix);
  },

  hide: function() {
    this.stopIndicator();
    if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
    if(this.iefix) Element.hide(this.iefix);
  },

  startIndicator: function() {
    if(this.options.indicator) Element.show(this.options.indicator);
  },

  stopIndicator: function() {
    if(this.options.indicator) Element.hide(this.options.indicator);
  },

  onKeyPress: function(event) {
    if(this.active)
      switch(event.keyCode) {
       case Event.KEY_TAB:
       case Event.KEY_RETURN:
         this.selectEntry();
         Event.stop(event);
       case Event.KEY_ESC:
         this.hide();
         this.active = false;
         Event.stop(event);
         return;
       case Event.KEY_LEFT:
       case Event.KEY_RIGHT:
         return;
       case Event.KEY_UP:
         this.markPrevious();
         this.render();
         Event.stop(event);
         return;
       case Event.KEY_DOWN:
         this.markNext();
         this.render();
         Event.stop(event);
         return;
      }
     else 
       if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || 
         (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;

    this.changed = true;
    this.hasFocus = true;

    if(this.observer) clearTimeout(this.observer);
      this.observer = 
        setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
  },

  activate: function() {
    this.changed = false;
    this.hasFocus = true;
    this.getUpdatedChoices();
  },

  onHover: function(event) {
    var element = Event.findElement(event, 'LI');
    if(this.index != element.autocompleteIndex) 
    {
        this.index = element.autocompleteIndex;
        this.render();
    }
    Event.stop(event);
  },
  
  onClick: function(event) {
    var element = Event.findElement(event, 'LI');
    this.index = element.autocompleteIndex;
    this.selectEntry();
    this.hide();
  },
  
  onBlur: function(event) {
    // needed to make click events working
    setTimeout(this.hide.bind(this), 250);
    this.hasFocus = false;
    this.active = false;     
  }, 
  
  render: function() {
    if(this.entryCount > 0) {
      for (var i = 0; i < this.entryCount; i++)
        this.index==i ? 
          Element.addClassName(this.getEntry(i),"selected") : 
          Element.removeClassName(this.getEntry(i),"selected");
      if(this.hasFocus) { 
        this.show();
        this.active = true;
      }
    } else {
      this.active = false;
      this.hide();
    }
  },
  
  markPrevious: function() {
    if(this.index > 0) this.index--
      else this.index = this.entryCount-1;
    this.getEntry(this.index).scrollIntoView(true);
  },
  
  markNext: function() {
    if(this.index < this.entryCount-1) this.index++
      else this.index = 0;
    this.getEntry(this.index).scrollIntoView(false);
  },
  
  getEntry: function(index) {
    return this.update.firstChild.childNodes[index];
  },
  
  getCurrentEntry: function() {
    return this.getEntry(this.index);
  },
  
  selectEntry: function() {
    this.active = false;
    this.updateElement(this.getCurrentEntry());
  },

  updateElement: function(selectedElement) {
    if (this.options.updateElement) {
      this.options.updateElement(selectedElement);
      return;
    }
    var value = '';
    if (this.options.select) {
      var nodes = $(selectedElement).select('.' + this.options.select) || [];
      if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
    } else
      value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
    
    var bounds = this.getTokenBounds();
    if (bounds[0] != -1) {
      var newValue = this.element.value.substr(0, bounds[0]);
      var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
      if (whitespace)
        newValue += whitespace[0];
      this.element.value = newValue + value + this.element.value.substr(bounds[1]);
    } else {
      this.element.value = value;
    }
    this.oldElementValue = this.element.value;
    this.element.focus();
    
    if (this.options.afterUpdateElement)
      this.options.afterUpdateElement(this.element, selectedElement);
  },

  updateChoices: function(choices) {
    if(!this.changed && this.hasFocus) {
      this.update.innerHTML = choices;
      Element.cleanWhitespace(this.update);
      Element.cleanWhitespace(this.update.down());

      if(this.update.firstChild && this.update.down().childNodes) {
        this.entryCount = 
          this.update.down().childNodes.length;
        for (var i = 0; i < this.entryCount; i++) {
          var entry = this.getEntry(i);
          entry.autocompleteIndex = i;
          this.addObservers(entry);
        }
      } else { 
        this.entryCount = 0;
      }

      this.stopIndicator();
      this.index = 0;
      
      if(this.entryCount==1 && this.options.autoSelect) {
        this.selectEntry();
        this.hide();
      } else {
        this.render();
      }
    }
  },

  addObservers: function(element) {
    Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
    Event.observe(element, "click", this.onClick.bindAsEventListener(this));
  },

  onObserverEvent: function() {
    this.changed = false;   
    this.tokenBounds = null;
    if(this.getToken().length>=this.options.minChars) {
      this.getUpdatedChoices();
    } else {
      this.active = false;
      this.hide();
    }
    this.oldElementValue = this.element.value;
  },

  getToken: function() {
    var bounds = this.getTokenBounds();
    return this.element.value.substring(bounds[0], bounds[1]).strip();
  },

  getTokenBounds: function() {
    if (null != this.tokenBounds) return this.tokenBounds;
    var value = this.element.value;
    if (value.strip().empty()) return [-1, 0];
    var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
    var offset = (diff == this.oldElementValue.length ? 1 : 0);
    var prevTokenPos = -1, nextTokenPos = value.length;
    var tp;
    for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
      tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
      if (tp > prevTokenPos) prevTokenPos = tp;
      tp = value.indexOf(this.options.tokens[index], diff + offset);
      if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
    }
    return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
  }
});

Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
  var boundary = Math.min(newS.length, oldS.length);
  for (var index = 0; index < boundary; ++index)
    if (newS[index] != oldS[index])
      return index;
  return boundary;
};

Ajax.Autocompleter = Class.create(Autocompleter.Base, {
  initialize: function(element, update, url, options) {
    this.baseInitialize(element, update, options);
    this.options.asynchronous  = true;
    this.options.onComplete    = this.onComplete.bind(this);
    this.options.defaultParams = this.options.parameters || null;
    this.url                   = url;
  },

  getUpdatedChoices: function() {
    this.startIndicator();
    
    var entry = encodeURIComponent(this.options.paramName) + '=' + 
      encodeURIComponent(this.getToken());

    this.options.parameters = this.options.callback ?
      this.options.callback(this.element, entry) : entry;

    if(this.options.defaultParams) 
      this.options.parameters += '&' + this.options.defaultParams;
    
    new Ajax.Request(this.url, this.options);
  },

  onComplete: function(request) {
    this.updateChoices(request.responseText);
  }
});

// The local array autocompleter. Used when you'd prefer to
// inject an array of autocompletion options into the page, rather
// than sending out Ajax queries, which can be quite slow sometimes.
//
// The constructor takes four parameters. The first two are, as usual,
// the id of the monitored textbox, and id of the autocompletion menu.
// The third is the array you want to autocomplete from, and the fourth
// is the options block.
//
// Extra local autocompletion options:
// - choices - How many autocompletion choices to offer
//
// - partialSearch - If false, the autocompleter will match entered
//                    text only at the beginning of strings in the 
//                    autocomplete array. Defaults to true, which will
//                    match text at the beginning of any *word* in the
//                    strings in the autocomplete array. If you want to
//                    search anywhere in the string, additionally set
//                    the option fullSearch to true (default: off).
//
// - fullSsearch - Search anywhere in autocomplete array strings.
//
// - partialChars - How many characters to enter before triggering
//                   a partial match (unlike minChars, which defines
//                   how many characters are required to do any match
//                   at all). Defaults to 2.
//
// - ignoreCase - Whether to ignore case when autocompleting.
//                 Defaults to true.
//
// It's possible to pass in a custom function as the 'selector' 
// option, if you prefer to write your own autocompletion logic.
// In that case, the other options above will not apply unless
// you support them.

Autocompleter.Local = Class.create(Autocompleter.Base, {
  initialize: function(element, update, array, options) {
    this.baseInitialize(element, update, options);
    this.options.array = array;
  },

  getUpdatedChoices: function() {
    this.updateChoices(this.options.selector(this));
  },

  setOptions: function(options) {
    this.options = Object.extend({
      choices: 10,
      partialSearch: true,
      partialChars: 2,
      ignoreCase: true,
      fullSearch: false,
      selector: function(instance) {
        var ret       = []; // Beginning matches
        var partial   = []; // Inside matches
        var entry     = instance.getToken();
        var count     = 0;

        for (var i = 0; i < instance.options.array.length &&  
          ret.length < instance.options.choices ; i++) { 

          var elem = instance.options.array[i];
          var foundPos = instance.options.ignoreCase ? 
            elem.toLowerCase().indexOf(entry.toLowerCase()) : 
            elem.indexOf(entry);

          while (foundPos != -1) {
            if (foundPos == 0 && elem.length != entry.length) { 
              ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + 
                elem.substr(entry.length) + "</li>");
              break;
            } else if (entry.length >= instance.options.partialChars && 
              instance.options.partialSearch && foundPos != -1) {
              if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
                  elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
                  foundPos + entry.length) + "</li>");
                break;
              }
            }

            foundPos = instance.options.ignoreCase ? 
              elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : 
              elem.indexOf(entry, foundPos + 1);

          }
        }
        if (partial.length)
          ret = ret.concat(partial.slice(0, instance.options.choices - ret.length))
        return "<ul>" + ret.join('') + "</ul>";
      }
    }, options || { });
  }
});

// AJAX in-place editor and collection editor
// Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).

// Use this if you notice weird scrolling problems on some browsers,
// the DOM might be a bit confused when this gets called so do this
// waits 1 ms (with setTimeout) until it does the activation
Field.scrollFreeActivate = function(field) {
  setTimeout(function() {
    Field.activate(field);
  }, 1);
}

Ajax.InPlaceEditor = Class.create({
  initialize: function(element, url, options) {
    this.url = url;
    this.element = element = $(element);
    this.prepareOptions();
    this._controls = { };
    arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
    Object.extend(this.options, options || { });
    if (!this.options.formId && this.element.id) {
      this.options.formId = this.element.id + '-inplaceeditor';
      if ($(this.options.formId))
        this.options.formId = '';
    }
    if (this.options.externalControl)
      this.options.externalControl = $(this.options.externalControl);
    if (!this.options.externalControl)
      this.options.externalControlOnly = false;
    this._originalBackground = this.element.getStyle('background-color') || 'transparent';
    this.element.title = this.options.clickToEditText;
    this._boundCancelHandler = this.handleFormCancellation.bind(this);
    this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
    this._boundFailureHandler = this.handleAJAXFailure.bind(this);
    this._boundSubmitHandler = this.handleFormSubmission.bind(this);
    this._boundWrapperHandler = this.wrapUp.bind(this);
    this.registerListeners();
  },
  checkForEscapeOrReturn: function(e) {
    if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
    if (Event.KEY_ESC == e.keyCode)
      this.handleFormCancellation(e);
    else if (Event.KEY_RETURN == e.keyCode)
      this.handleFormSubmission(e);
  },
  createControl: function(mode, handler, extraClasses) {
    var control = this.options[mode + 'Control'];
    var text = this.options[mode + 'Text'];
    if ('button' == control) {
      var btn = document.createElement('input');
      btn.type = 'submit';
      btn.value = text;
      btn.className = 'editor_' + mode + '_button';
      if ('cancel' == mode)
        btn.onclick = this._boundCancelHandler;
      this._form.appendChild(btn);
      this._controls[mode] = btn;
    } else if ('link' == control) {
      var link = document.createElement('a');
      link.href = '#';
      link.appendChild(document.createTextNode(text));
      link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
      link.className = 'editor_' + mode + '_link';
      if (extraClasses)
        link.className += ' ' + extraClasses;
      this._form.appendChild(link);
      this._controls[mode] = link;
    }
  },
  createEditField: function() {
    var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
    var fld;
    if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
      fld = document.createElement('input');
      fld.type = 'text';
      var size = this.options.size || this.options.cols || 0;
      if (0 < size) fld.size = size;
    } else {
      fld = document.createElement('textarea');
      fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
      fld.cols = this.options.cols || 40;
    }
    fld.name = this.options.paramName;
    fld.value = text; // No HTML breaks conversion anymore
    fld.className = 'editor_field';
    if (this.options.submitOnBlur)
      fld.onblur = this._boundSubmitHandler;
    this._controls.editor = fld;
    if (this.options.loadTextURL)
      this.loadExternalText();
    this._form.appendChild(this._controls.editor);
  },
  createForm: function() {
    var ipe = this;
    function addText(mode, condition) {
      var text = ipe.options['text' + mode + 'Controls'];
      if (!text || condition === false) return;
      ipe._form.appendChild(document.createTextNode(text));
    };
    this._form = $(document.createElement('form'));
    this._form.id = this.options.formId;
    this._form.addClassName(this.options.formClassName);
    this._form.onsubmit = this._boundSubmitHandler;
    this.createEditField();
    if ('textarea' == this._controls.editor.tagName.toLowerCase())
      this._form.appendChild(document.createElement('br'));
    if (this.options.onFormCustomization)
      this.options.onFormCustomization(this, this._form);
    addText('Before', this.options.okControl || this.options.cancelControl);
    this.createControl('ok', this._boundSubmitHandler);
    addText('Between', this.options.okControl && this.options.cancelControl);
    this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
    addText('After', this.options.okControl || this.options.cancelControl);
  },
  destroy: function() {
    if (this._oldInnerHTML)
      this.element.innerHTML = this._oldInnerHTML;
    this.leaveEditMode();
    this.unregisterListeners();
  },
  enterEditMode: function(e) {
    if (this._saving || this._editing) return;
    this._editing = true;
    this.triggerCallback('onEnterEditMode');
    if (this.options.externalControl)
      this.options.externalControl.hide();
    this.element.hide();
    this.createForm();
    this.element.parentNode.insertBefore(this._form, this.element);
    if (!this.options.loadTextURL)
      this.postProcessEditField();
    if (e) Event.stop(e);
  },
  enterHover: function(e) {
    if (this.options.hoverClassName)
      this.element.addClassName(this.options.hoverClassName);
    if (this._saving) return;
    this.triggerCallback('onEnterHover');
  },
  getText: function() {
    return this.element.innerHTML;
  },
  handleAJAXFailure: function(transport) {
    this.triggerCallback('onFailure', transport);
    if (this._oldInnerHTML) {
      this.element.innerHTML = this._oldInnerHTML;
      this._oldInnerHTML = null;
    }
  },
  handleFormCancellation: function(e) {
    this.wrapUp();
    if (e) Event.stop(e);
  },
  handleFormSubmission: function(e) {
    var form = this._form;
    var value = $F(this._controls.editor);
    this.prepareSubmission();
    var params = this.options.callback(form, value) || '';
    if (Object.isString(params))
      params = params.toQueryParams();
    params.editorId = this.element.id;
    if (this.options.htmlResponse) {
      var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: params,
        onComplete: this._boundWrapperHandler,
        onFailure: this._boundFailureHandler
      });
      new Ajax.Updater({ success: this.element }, this.url, options);
    } else {
      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: params,
        onComplete: this._boundWrapperHandler,
        onFailure: this._boundFailureHandler
      });
      new Ajax.Request(this.url, options);
    }
    if (e) Event.stop(e);
  },
  leaveEditMode: function() {
    this.element.removeClassName(this.options.savingClassName);
    this.removeForm();
    this.leaveHover();
    this.element.style.backgroundColor = this._originalBackground;
    this.element.show();
    if (this.options.externalControl)
      this.options.externalControl.show();
    this._saving = false;
    this._editing = false;
    this._oldInnerHTML = null;
    this.triggerCallback('onLeaveEditMode');
  },
  leaveHover: function(e) {
    if (this.options.hoverClassName)
      this.element.removeClassName(this.options.hoverClassName);
    if (this._saving) return;
    this.triggerCallback('onLeaveHover');
  },
  loadExternalText: function() {
    this._form.addClassName(this.options.loadingClassName);
    this._controls.editor.disabled = true;
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        this._form.removeClassName(this.options.loadingClassName);
        var text = transport.responseText;
        if (this.options.stripLoadedTextTags)
          text = text.stripTags();
        this._controls.editor.value = text;
        this._controls.editor.disabled = false;
        this.postProcessEditField();
      }.bind(this),
      onFailure: this._boundFailureHandler
    });
    new Ajax.Request(this.options.loadTextURL, options);
  },
  postProcessEditField: function() {
    var fpc = this.options.fieldPostCreation;
    if (fpc)
      $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
  },
  prepareOptions: function() {
    this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
    Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
    [this._extraDefaultOptions].flatten().compact().each(function(defs) {
      Object.extend(this.options, defs);
    }.bind(this));
  },
  prepareSubmission: function() {
    this._saving = true;
    this.removeForm();
    this.leaveHover();
    this.showSaving();
  },
  registerListeners: function() {
    this._listeners = { };
    var listener;
    $H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
      listener = this[pair.value].bind(this);
      this._listeners[pair.key] = listener;
      if (!this.options.externalControlOnly)
        this.element.observe(pair.key, listener);
      if (this.options.externalControl)
        this.options.externalControl.observe(pair.key, listener);
    }.bind(this));
  },
  removeForm: function() {
    if (!this._form) return;
    this._form.remove();
    this._form = null;
    this._controls = { };
  },
  showSaving: function() {
    this._oldInnerHTML = this.element.innerHTML;
    this.element.innerHTML = this.options.savingText;
    this.element.addClassName(this.options.savingClassName);
    this.element.style.backgroundColor = this._originalBackground;
    this.element.show();
  },
  triggerCallback: function(cbName, arg) {
    if ('function' == typeof this.options[cbName]) {
      this.options[cbName](this, arg);
    }
  },
  unregisterListeners: function() {
    $H(this._listeners).each(function(pair) {
      if (!this.options.externalControlOnly)
        this.element.stopObserving(pair.key, pair.value);
      if (this.options.externalControl)
        this.options.externalControl.stopObserving(pair.key, pair.value);
    }.bind(this));
  },
  wrapUp: function(transport) {
    this.leaveEditMode();
    // Can't use triggerCallback due to backward compatibility: requires
    // binding + direct element
    this._boundComplete(transport, this.element);
  }
});

Object.extend(Ajax.InPlaceEditor.prototype, {
  dispose: Ajax.InPlaceEditor.prototype.destroy
});

Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
  initialize: function($super, element, url, options) {
    this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
    $super(element, url, options);
  },

  createEditField: function() {
    var list = document.createElement('select');
    list.name = this.options.paramName;
    list.size = 1;
    this._controls.editor = list;
    this._collection = this.options.collection || [];
    if (this.options.loadCollectionURL)
      this.loadCollection();
    else
      this.checkForExternalText();
    this._form.appendChild(this._controls.editor);
  },

  loadCollection: function() {
    this._form.addClassName(this.options.loadingClassName);
    this.showLoadingText(this.options.loadingCollectionText);
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        var js = transport.responseText.strip();
        if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
          throw 'Server returned an invalid collection representation.';
        this._collection = eval(js);
        this.checkForExternalText();
      }.bind(this),
      onFailure: this.onFailure
    });
    new Ajax.Request(this.options.loadCollectionURL, options);
  },

  showLoadingText: function(text) {
    this._controls.editor.disabled = true;
    var tempOption = this._controls.editor.firstChild;
    if (!tempOption) {
      tempOption = document.createElement('option');
      tempOption.value = '';
      this._controls.editor.appendChild(tempOption);
      tempOption.selected = true;
    }
    tempOption.update((text || '').stripScripts().stripTags());
  },

  checkForExternalText: function() {
    this._text = this.getText();
    if (this.options.loadTextURL)
      this.loadExternalText();
    else
      this.buildOptionList();
  },

  loadExternalText: function() {
    this.showLoadingText(this.options.loadingText);
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        this._text = transport.responseText.strip();
        this.buildOptionList();
      }.bind(this),
      onFailure: this.onFailure
    });
    new Ajax.Request(this.options.loadTextURL, options);
  },

  buildOptionList: function() {
    this._form.removeClassName(this.options.loadingClassName);
    this._collection = this._collection.map(function(entry) {
      return 2 === entry.length ? entry : [entry, entry].flatten();
    });
    var marker = ('value' in this.options) ? this.options.value : this._text;
    var textFound = this._collection.any(function(entry) {
      return entry[0] == marker;
    }.bind(this));
    this._controls.editor.update('');
    var option;
    this._collection.each(function(entry, index) {
      option = document.createElement('option');
      option.value = entry[0];
      option.selected = textFound ? entry[0] == marker : 0 == index;
      option.appendChild(document.createTextNode(entry[1]));
      this._controls.editor.appendChild(option);
    }.bind(this));
    this._controls.editor.disabled = false;
    Field.scrollFreeActivate(this._controls.editor);
  }
});

//**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
//**** This only  exists for a while,  in order to  let ****
//**** users adapt to  the new API.  Read up on the new ****
//**** API and convert your code to it ASAP!            ****

Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
  if (!options) return;
  function fallback(name, expr) {
    if (name in options || expr === undefined) return;
    options[name] = expr;
  };
  fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' :
    options.cancelLink == options.cancelButton == false ? false : undefined)));
  fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' :
    options.okLink == options.okButton == false ? false : undefined)));
  fallback('highlightColor', options.highlightcolor);
  fallback('highlightEndColor', options.highlightendcolor);
};

Object.extend(Ajax.InPlaceEditor, {
  DefaultOptions: {
    ajaxOptions: { },
    autoRows: 3,                                // Use when multi-line w/ rows == 1
    cancelControl: 'link',                      // 'link'|'button'|false
    cancelText: 'cancel',
    clickToEditText: 'Click to edit',
    externalControl: null,                      // id|elt
    externalControlOnly: false,
    fieldPostCreation: 'activate',              // 'activate'|'focus'|false
    formClassName: 'inplaceeditor-form',
    formId: null,                               // id|elt
    highlightColor: '#ffff99',
    highlightEndColor: '#ffffff',
    hoverClassName: '',
    htmlResponse: true,
    loadingClassName: 'inplaceeditor-loading',
    loadingText: 'Loading...',
    okControl: 'button',                        // 'link'|'button'|false
    okText: 'ok',
    paramName: 'value',
    rows: 1,                                    // If 1 and multi-line, uses autoRows
    savingClassName: 'inplaceeditor-saving',
    savingText: 'Saving...',
    size: 0,
    stripLoadedTextTags: false,
    submitOnBlur: false,
    textAfterControls: '',
    textBeforeControls: '',
    textBetweenControls: ''
  },
  DefaultCallbacks: {
    callback: function(form) {
      return Form.serialize(form);
    },
    onComplete: function(transport, element) {
      // For backward compatibility, this one is bound to the IPE, and passes
      // the element directly.  It was too often customized, so we don't break it.
      new Effect.Highlight(element, {
        startcolor: this.options.highlightColor, keepBackgroundImage: true });
    },
    onEnterEditMode: null,
    onEnterHover: function(ipe) {
      ipe.element.style.backgroundColor = ipe.options.highlightColor;
      if (ipe._effect)
        ipe._effect.cancel();
    },
    onFailure: function(transport, ipe) {
      alert('Error communication with the server: ' + transport.responseText.stripTags());
    },
    onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls.
    onLeaveEditMode: null,
    onLeaveHover: function(ipe) {
      ipe._effect = new Effect.Highlight(ipe.element, {
        startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor,
        restorecolor: ipe._originalBackground, keepBackgroundImage: true
      });
    }
  },
  Listeners: {
    click: 'enterEditMode',
    keydown: 'checkForEscapeOrReturn',
    mouseover: 'enterHover',
    mouseout: 'leaveHover'
  }
});

Ajax.InPlaceCollectionEditor.DefaultOptions = {
  loadingCollectionText: 'Loading options...'
};

// Delayed observer, like Form.Element.Observer, 
// but waits for delay after last key input
// Ideal for live-search fields

Form.Element.DelayedObserver = Class.create({
  initialize: function(element, delay, callback) {
    this.delay     = delay || 0.5;
    this.element   = $(element);
    this.callback  = callback;
    this.timer     = null;
    this.lastValue = $F(this.element); 
    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
  },
  delayedListener: function(event) {
    if(this.lastValue == $F(this.element)) return;
    if(this.timer) clearTimeout(this.timer);
    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
    this.lastValue = $F(this.element);
  },
  onTimerEvent: function() {
    this.timer = null;
    this.callback(this.element, $F(this.element));
  }
});

/****************************************************************/
/*  original filename tooltips-v02.js                        */
/****************************************************************/


/*
 * Copyright (c) 2006 Jonathan Weiss <jw@innerewut.de>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */


/* tooltip-0.2.js - Small tooltip library on top of Prototype 
 * by Jonathan Weiss <jw@innerewut.de> distributed under the BSD license. 
 *
 * This tooltip library works in two modes. If it gets a valid DOM element 
 * or DOM id as an argument it uses this element as the tooltip. This 
 * element will be placed (and shown) near the mouse pointer when a trigger-
 * element is moused-over.
 * If it gets only a text as an argument instead of a DOM id or DOM element
 * it will create a div with the classname 'tooltip' that holds the given text.
 * This newly created div will be used as the tooltip. This is usefull if you 
 * want to use tooltip.js to create popups out of title attributes.
 * 
 *
 * Usage: 
 *   <script src="/javascripts/prototype.js" type="text/javascript"></script>
 *   <script src="/javascripts/tooltip.js" type="text/javascript"></script>
 *   <script type="text/javascript">
 *     // with valid DOM id
 *     var my_tooltip = new Tooltip('id_of_trigger_element', 'id_of_tooltip_to_show_element')
 *
 *     // with text
 *     var my_other_tooltip = new Tooltip('id_of_trigger_element', 'a nice description')
 *
 *     // create popups for each element with a title attribute
 *    Event.observe(window,"load",function() {
 *      $$("*").findAll(function(node){
 *        return node.getAttribute('title');
 *      }).each(function(node){
 *        new Tooltip(node,node.title);
 *        node.removeAttribute("title");
 *      });
 *    });
 *    
 *   </script>
 * 
 * Now whenever you trigger a mouseOver on the `trigger` element, the tooltip element will
 * be shown. On o mouseOut the tooltip disappears. 
 * 
 * Example:
 * 
 *   <script src="/javascripts/prototype.js" type="text/javascript"></script>
 *   <script src="/javascripts/scriptaculous.js" type="text/javascript"></script>
 *   <script src="/javascripts/tooltip.js" type="text/javascript"></script>
 *
 *   <div id='tooltip' style="display:none; margin: 5px; background-color: red;">
 *     Detail infos on product 1....<br />
 *   </div>
 *
 *   <div id='product_1'>
 *     This is product 1
 *   </div>
 *
 *   <script type="text/javascript">
 *     var my_tooltip = new Tooltip('product_1', 'tooltip')
 *   </script>
 *
 * You can use my_tooltip.destroy() to remove the event observers and thereby the tooltip.
 */

var Tooltip = Class.create();
Tooltip.prototype = {
  initialize: function(element, tool_tip) {
    var options = Object.extend({
      default_css: false,
      margin: "0px",
	    padding: "5px",
	    backgroundColor: "#d6d6fc",
	    min_distance_x: 5,
      min_distance_y: 5,
      delta_x: 0,
      delta_y: 0,
      zindex: 1000
    }, arguments[2] || {});

    this.element      = $(element);

    this.options      = options;
    
    // use the supplied tooltip element or create our own div
    if($(tool_tip)) {
      this.tool_tip = $(tool_tip);
    } else {
      this.tool_tip = $(document.createElement("div")); 
      document.body.appendChild(this.tool_tip);
      this.tool_tip.addClassName("tooltip");
      this.tool_tip.appendChild(document.createTextNode(tool_tip));
    }

    // hide the tool-tip by default
    this.tool_tip.hide();

    this.eventMouseOver = this.showTooltip.bindAsEventListener(this);
    this.eventMouseOut   = this.hideTooltip.bindAsEventListener(this);
    this.eventMouseMove  = this.moveTooltip.bindAsEventListener(this);

    this.registerEvents();
  },

  destroy: function() {
    Event.stopObserving(this.element, "mouseover", this.eventMouseOver);
    Event.stopObserving(this.element, "mouseout", this.eventMouseOut);
    Event.stopObserving(this.element, "mousemove", this.eventMouseMove);
  },

  registerEvents: function() {
    Event.observe(this.element, "mouseover", this.eventMouseOver);
    Event.observe(this.element, "mouseout", this.eventMouseOut);
    Event.observe(this.element, "mousemove", this.eventMouseMove);
  },

  moveTooltip: function(event){
	  Event.stop(event);
	  // get Mouse position
    var mouse_x = Event.pointerX(event);
	  var mouse_y = Event.pointerY(event);
	
	  // decide if wee need to switch sides for the tooltip
	  var dimensions = Element.getDimensions( this.tool_tip );
	  var element_width = dimensions.width;
	  var element_height = dimensions.height;
	
	  if ( (element_width + mouse_x) >= ( this.getWindowWidth() - this.options.min_distance_x) ){ // too big for X
		  mouse_x = mouse_x - element_width;
		  // apply min_distance to make sure that the mouse is not on the tool-tip
		  mouse_x = mouse_x - this.options.min_distance_x;
	  } else {
		  mouse_x = mouse_x + this.options.min_distance_x;
	  }
	
	  if ( (element_height + mouse_y) >= ( this.getWindowHeight() - this.options.min_distance_y) ){ // too big for Y
		  mouse_y = mouse_y - element_height;
	    // apply min_distance to make sure that the mouse is not on the tool-tip
		  mouse_y = mouse_y - this.options.min_distance_y;
	  } else {
		  mouse_y = mouse_y + this.options.min_distance_y;
	  } 
	
	  // now set the right styles
	  this.setStyles(mouse_x, mouse_y);
  },
	
		
  showTooltip: function(event) {
    Event.stop(event);
    this.moveTooltip(event);
	  new Element.show(this.tool_tip);
  },
  
  setStyles: function(x, y){
    // set the right styles to position the tool tip
	  Element.setStyle(this.tool_tip, { position:'absolute',
	 								    top:y + this.options.delta_y + "px",
	 								    left:x + this.options.delta_x + "px",
									    zindex:this.options.zindex
	 								  });
	
	  // apply default theme if wanted
	  if (this.options.default_css){
	  	  Element.setStyle(this.tool_tip, { margin:this.options.margin,
		 		  						                    padding:this.options.padding,
		                                      backgroundColor:this.options.backgroundColor,
										                      zindex:this.options.zindex
		 								    });	
	  }	
  },

  hideTooltip: function(event){
	  new Element.hide(this.tool_tip);
  },

  getWindowHeight: function(){
    var innerHeight;
	  if (navigator.appVersion.indexOf('MSIE')>0) {
		  innerHeight = document.body.clientHeight;
    } else {
		  innerHeight = window.innerHeight;
    }
    return innerHeight;	
  },
 
  getWindowWidth: function(){
    var innerWidth;
	  if (navigator.appVersion.indexOf('MSIE')>0) {
		  innerWidth = document.body.clientWidth;
    } else {
		  innerWidth = window.innerWidth;
    }
    return innerWidth;	
  }

}

/****************************************************************/
/*  original filename currency.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */


var Currency = {
  currency_symbol: '$',

  // Borrowed from Rails helper library.  -BH
  number_to_currency: function (number, hash) {
    try {
      var options   = hash || {};
      var precision = options["precision"] || 2;
      var separator = precision > 0 ? options["separator"] || "." : "";
      var delimiter = options["delimiter"] || ",";

      var parts = parseFloat(number).toFixed(precision).split('.');
      


    //svb 6.20.08
    if (Trim =="no") return this.currency_symbol + this.number_with_delimiter(parts[0], delimiter) + separator + parts[1].toString();
    if (Trim =="yes") return this.currency_symbol + this.number_with_delimiter(parts[0], delimiter).toString();
    } catch(e) {
      return number;
    }
  },

  // Borrowed from Rails helper library.  -BH
  number_with_delimiter: function (number, delimiter, separator) {
    try {
      var delimiter = delimiter || ",";
      var separator = separator || ".";

      var parts = number.toString().split('.');
      parts[0] = parts[0].replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1" + delimiter);
      return parts.join(separator);
    } catch(e) {
      return number;
    }
  },

  // returns amount in ##.## format
  format: function(amount) {
    return Number(amount).toFixed(2);
  },

  format_field: function(element) {
    $(element).value = Currency.format($F(element));
  },

  parse_float_with_currencies: function(string) {
    return parseFloat(string.gsub(/[^-\d\.]/, ''));
  }

};


/****************************************************************/
/*  original filename reports.js                        */
/****************************************************************/


var reports = {

  change_timeframe_pressed : false,

  check_for_valid_dates: function(){
    var start_date = $F('start_date')
    var end_date   = $F('end_date')

    if (false == date.is_valid_date(start_date)){
      alert('Please select a valid start date!');
      return false;
    }
    if (false == date.is_valid_date(end_date)){
      alert('Please select a valid end date!');
      return false;
    }

    reports.format_dates_for_pretty_urls();
    return true;
  },

  submit: function(start_year, start_month, start_day, end_year, end_month, end_day) {
    $('start_date').value = start_month + '-' + start_day + '-' + start_year;
    $('end_date').value   = end_month   + '-' + end_day   + '-' + end_year;

    $('selector_form').submit();
  },

  submit_to_url: function(url) {
    var id_fields = ['project_id', 'task_id', 'client_id', 'person_id'];
    //clear old ids
    id_fields.each(
        function(id) {
          $(id).value='';
        }
      );
    var store_id_in_hidden_field_if_present_in_url = function(id) {
      var rgxp = RegExp( id + '=(\\d+)')
      var m = rgxp.exec(url);
      if(m != null) {
        $(id).value = m[1];
      }
    }
    //store new ids
    id_fields.each(
        function(id) {
          store_id_in_hidden_field_if_present_in_url(id);
        }
      );
    //submit
    $('selector_form').action = url;
    reports.format_dates_for_pretty_urls();
    $('selector_form').submit();
  },

  // Format date for pretty URL's in preperation for submission.
  format_dates_for_pretty_urls: function() {
    $('start_date').value = $F('start_date').gsub(date.date_seperator_regexp, '-')
    $('end_date').value = $F('end_date').gsub(date.date_seperator_regexp, '-')
  },

  show_layer: function(toggler_link, label){
    var css_label = reports.cssize_label(label)
    var div_id = 'layer_' + css_label
    var selected_layer = $(div_id);
    $$('#reporting_wide_col .report_layer').each(
        function(e) {
          if (Element.visible(e)) {
            e.style.display = 'none';
            selected_layer.style.display = '';
          }
        }
      );
    $$('#overlay_tabs .overlay_selected').each(
        function(e) {
          e.removeClassName('overlay_selected');
        }
      );
    $(toggler_link).addClassName('overlay_selected');
    $('visible_layer').value = label;
  },

  re_base_bar_graph_widths: function(){
    var rebase = function(css_selector){
      var items = $$(css_selector);
      var max_width = items.map(function(t) { return parseFloat(t.style.width) || 0}).max();
      if(max_width <= 0 || max_width >= 100)
        return;
      var rebased_max_width = 100.0 / max_width;
      items.each(function(t) {
          t.style.width = ((parseFloat(t.style.width) || 0) * rebased_max_width) + '%';
        });
    };
    rebase('.report_layer .fill_hours, .report_layer .bg_hours');
    rebase('.report_layer .fill_estimate, .report_layer .bg_estimate, .report_layer .bg_over_estimate');
  },

  add_nobdr_class_to_last_cells_in_reporting_tables: function(){
    $$('tbody.reporting_tbody > tr:last-child td').invoke('addClassName', 'nobdr');
  },

  cssize_label: function(label) {
    return label.toLowerCase().replace(/\-/, '_');
  },

  change_time_frame: function() {
    move_div_down('time_selector');
  },

  cancel_change_time_frame: function() {
    hide_big_div('time_selector')
  },

  sum_values_from: function(selector, to_value_functor){
    return $$(selector).pluck('firstChild').pluck('nodeValue').inject(0, function(sum, e)  {
        return sum + (to_value_functor(e) || 0);
      });
  },

  display_detailed_sum: function () {
    document.writeln(reports.sum_values_from('.number', parseFloat).toFixed(2));
  },

  display_detailed_expense_sum: function () {
    sum = reports.sum_values_from('.number', this.parse_float_with_currencies);
    document.writeln(reports.number_to_currency(sum));
  },

  compute_sum_for: function(selector){
    var value = reports.sum_values_from(selector, reports.parse_float_with_parenthesized_negatives);
    if(value >= 0){
      return value.toFixed(2);
    }
    return "<span class='over_estimate'>(" + (-value).toFixed(2) + ")</span>";
  },

  compute_sum_costs_for: function(selector){
    return reports.number_to_currency(reports.sum_values_from(selector, reports.parse_costs));
  },

  parse_float_with_parenthesized_negatives: function (string) {
    return string.include('(') ? -(parseFloat(hours.abs_time(string))) : parseFloat(string);
  },

  parse_costs: function(string) {
    return parseFloat(string.gsub('\\' + reports.currency_symbol, '').gsub(',', ''));
  },

  toggle_change_timeframe_btn: function() {
     Element.toggle('timeframe_selection');
     if (this.change_timeframe_pressed == false) {
       $('change_timeframe_btn').addClassName('pressed');
       this.change_timeframe_pressed = true;
       $('start_date').activate();
    } else {
       $('change_timeframe_btn').removeClassName('pressed');
       this.change_timeframe_pressed = false;
     }
  }

};

Object.extend(reports, Currency);

/****************************************************************/
/*  original filename expense_reports.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
var expense_reports = {

  all_reportable_user_options: '',
  all_reportable_project_options: '',
  all_reportable_client_options: '',

  submit: function() {
    // Halt submission if custom timeframe has invalid dates entered.
    if(this._custom_timeframe_selected() && (false == reports.check_for_valid_dates())) {
      return false;
    }
    $('expense_report_filter_form').action = this.build_url();
    $('expense_report_filter_form').submit();
  },

  build_url: function() {
    var timeframe_dates = this._get_timeframe_dates();
    var url = '/reports/expenses/' + timeframe_dates[0] + '/' + timeframe_dates[1];

    var select_fields = ['client_id', 'project_id', 'expense_category_id', 'user_id'];
    return select_fields.inject(url, function(url, select_field) {
      return url + '/' + encodeURIComponent($F(select_field));
    });
  },
	
  // Returns [start_date, end_date]
  _get_timeframe_dates: function() {
    if(this._custom_timeframe_selected()) {
      reports.format_dates_for_pretty_urls();
      return [this._mmddyyyy_to_yyyymmdd($F('start_date')), this._mmddyyyy_to_yyyymmdd($F('end_date'))];
    } else {
      return $F('timeframe').split(',');  // 'timeframe' select value is "start_date,end_date"
    }
  },
	
  _mmddyyyy_to_yyyymmdd: function(date, separator) {
    separator  = separator || '-';
    date_parts = date.split(separator);
    return date_parts[2] + '-' + date_parts[0] + '-' + date_parts[1];
  },

  toggle_custom_timeframe: function() {
    if(this._custom_timeframe_selected()) {
      $('custom_timeframe').show();
    } else {
      $('custom_timeframe').hide();
    }
  },
  
  display_custom_timeframe_form_if_selected: function() {
    if(this._custom_timeframe_selected()) {
      $('custom_timeframe').show();
    }
  },
  
  _custom_timeframe_selected: function() {
    return 'Custom' == $F('timeframe');
  },

  // Force "Loading..." text within select box for a delayed amount of time.  This method
  // reduces the size of the option list to 1 option - it works in conjuction with
  // update_select_with_all.
  remove_options_and_load: function(select_id) {
    var options = $(select_id).options;
    options.length = 1;
    var prompt_option = options[0];
    options[0] = new Option('Loading...', '');
    setTimeout(function(){
      options[0] = prompt_option;
    }, 750);
  },
  
  // Updates select list specified by select_id with all reportable items, which should include
  // inactive items filtered out on initial page load.  The "all reportable items" variable
  // must be popluated by Rails upon page load.
  update_select_with_all: function(select_id) {
    var options = $(select_id).options;
    
    // Remove the '_id'
    var all_options = expense_reports['all_reportable_' + select_id.gsub('_id', '') + '_options'];
    all_options.each(function(option_array) {
      // option_array[0] => text, option_array[1] => value
      options[options.length] = new Option(option_array[0], option_array[1]);
    });
  },
  
  // On an observed select box, this method replaces an "active-only" list with all items using
  // update_select_with_all.  Once inactive are shown, adds a hidden field to the form so this
  // state can be passed through to subsequent expense report filters.
  check_show_inactive: function(event) {
    var element = Event.element(event);
    if(expense_reports.show_inactive_id == element.getValue()) {
      expense_reports.remove_options_and_load(element.id);
      expense_reports.update_select_with_all(element.id);

      // Create hidden field associated with element.
      var model_name = element.id.sub(/_id$/, '');
      var h = document.createElement('input');
      h.setAttribute('type', 'hidden');
      h.setAttribute('id', 'show_inactive_' + model_name);
      h.setAttribute('name', 'show_inactive_' + model_name);
      h.setAttribute('value', 'true');
      
      // Append hidden field to the form
      element.up('form').appendChild(h);
    }
  }

};

/****************************************************************/
/*  original filename project.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
var project_mgr = {

  request: function(url, parameters_, method_){
    method_ = typeof(method_) != 'undefined' ? method_ : 'post';
    parameters_ = typeof(parameters_) != 'undefined' ? parameters_ : '';
    new Ajax.Request(url, {asynchronous:true, evalScripts:true, method: method_, parameters: parameters_});
  },

  toggle_input_field: function(field, condition){
    if(condition){
      if(field.visible) {
        field.show();
      }
    } else {  
      field.blur();
      field.hide();
    }
  },
  
  handle_change_of__bill_project_by_or_esimate_by: function() {
    var new_rates_value     = $F("project_rates_setting");
    var new_estimates_value = $F("project_estimates_setting");
    var estimates_td        = $("total_task_estimates_td");

    switch(true) {
    case 'Tasks' != new_rates_value && 'task' != new_estimates_value : 
      estimates_td.writeAttribute('colspan', null);
      estimates_td.removeClassName('number');
      break;
    case 'Tasks' != new_rates_value :
      estimates_td.writeAttribute('colspan', '2');
      estimates_td.addClassName('number');
      break;
    case 'task' != new_estimates_value :
      estimates_td.writeAttribute('colspan', '2');
      estimates_td.removeClassName('number');
      break;
    default :
      estimates_td.writeAttribute('colspan', '3');
      estimates_td.addClassName('number');
      break;
    }
  },

  handle_change_of__bill_project_by: function() {
    var new_value = $F("project_rates_setting");
    $$('#tasks_edit .task_rates_td').each(function(e) {
        project_mgr.toggle_input_field(e, new_value == 'Tasks');
      });
    $$('#people_edit .people_rates_td').each(function(e) {
        project_mgr.toggle_input_field(e, new_value == 'People');
      });
    colspan = 'People' == new_value ? '4' : '3';
    $('add_person_td').writeAttribute('colspan', colspan);
    project_mgr.handle_change_of__bill_project_by_or_esimate_by();
  },

  handle_change_of__estimate_by: function() {
    var new_value = $F("project_estimates_setting");
    if(new_value == 'none'){
      $('project_estimate').value = '';
      $('project_estimate').disabled = '';
      $('project_estimate', 'project_estimate_label', 'total-task-estimates-cont').invoke('hide');
      $$("#tasks_edit .task_estimate_td").invoke('hide');
    }
    if(new_value == 'project'){
      $('project_estimate', 'project_estimate_label').invoke('show');
      $('total-task-estimates-cont').hide();
      $$("#tasks_edit .task_estimate_td").invoke('hide');
    }
    if(new_value == 'task'){
      $('project_estimate', 'project_estimate_label').invoke('hide');
      $('total-task-estimates-cont').show();
      $$("#tasks_edit .task_estimate_td").invoke('show');
    }
    project_mgr.handle_change_of__bill_project_by_or_esimate_by();
  },


  delete_user: function(project_id, user_assignment_id){
    if (confirm("Remove this user from the current project?")) {
      project_mgr.request('/projects/'+ project_id + '/user_assignments/' + user_assignment_id, '', 'delete');
    }
  },

  re_activate_user: function(project_id, user_assignment_id){
    project_mgr.request('/projects/'+ project_id + '/user_assignments/' + user_assignment_id + '/re_activate');
  },

  delete_task: function(project_id, task_assignment_id){
    if (confirm("Remove this task from the current project?")) {
      project_mgr.request('/projects/'+ project_id + '/task_assignments/' + task_assignment_id, '', 'delete');
    }
  },

  re_activate_task: function(project_id, task_assignment_id){
    project_mgr.request('/projects/'+ project_id + '/task_assignments/' + task_assignment_id + '/re_activate');
  },

  toggle_project_status: function(project_id){
    $('project_activate_deactivate').hide();
    $('project_activate_deactivate_progress').show();
    project_mgr.request('/projects/'+ project_id + '/toggle');
  },

  add_project: function() {
    if (!$F('project_name').blank()) {
      document.project_info.submit();
    } else {
      alert("Project name cannot be blank.");
    }
  },

  update_sum_task_estimates: function(){
    var sum_task_estimates = $$("#tasks_edit .task_estimate").pluck('value').inject(0,
                                                                                  function(sum, e) {
                                                                                    return sum + (parseFloat(e) || 0);
                                                                                  });
    $('total-task-estimates').innerHTML = sum_task_estimates;
    if($F("project_estimates_setting") == "task"){
      $('project_estimate').value = sum_task_estimates;
    }
  },

  all_marked_as_billable: false,
  toggle_all_as_billable: function(){
    $$('#tasks_edit tr.active input[id$=billable]').each(function(e){
        e.checked = (project_mgr.all_marked_as_billable ? '' : 'false')
          });
    project_mgr.all_marked_as_billable = !project_mgr.all_marked_as_billable;
  },


  register_on_change_for: function(root_element) {
    var inputs = $(root_element).getElementsByTagName('input');
    var length = inputs.length;
    for( var i = 0; i < length; i++) {
      if ('text' == inputs[i].type.toLowerCase()) {
        Event.observe(inputs[i], 'change', project_mgr.update_sum_task_estimates);
        Event.observe(inputs[i], 'keydown', timesheet.disable_enter_key);
      }
    }
  },

  register_on_change_handlers: function() {
    project_mgr.update_sum_task_estimates();

    project_mgr.register_on_change_for('project_task_rows');
    project_mgr.register_on_change_for('project_people_rows');

    project_mgr.register_task_select_handler();
    Event.observe($("project_client_id"), 'change', project_mgr.handle_onchange__select_client);
    project_mgr.handle_change_of__estimate_by();
    Event.observe($("project_estimates_setting"), 'change', project_mgr.handle_change_of__estimate_by);
  },

  register_task_select_handler: function() {
    Event.observe($("tasks-select"), 'change', project_mgr.handle_onchange__add_task);
  },


  handle_onchange__add_task: function(){
    var task_value = $F("tasks-select");
    if(task_value == 'new_task'){
      $('new_task_name_container').show();
      $('new_task_name').value = '';
      $('new_task_name').activate();
    } else{
      $('new_task_name_container').hide();
      $('tasks-select').focus();
    }
  },

  handle_onchange__select_client: function(){
    var client_id = $F('project_client_id');
    if(client_id == 'new_client') {
      $('new_client_control').show();
      $('new_client_name').value = "Enter new client name";
      $('new_client_name').select();
      $('new_client_name').focus();
    }
    else {
      $('new_client_name').value='';
      $('new_client_control').hide();
    }
  },

  add_task: function(project_id) {
    var task_id = $F('tasks-select');
    if(task_id.blank())
      return;
    if(task_id == 'new_task') {
      var new_task_name = $F('new_task_name')
        if(!new_task_name.blank()) {
          $('add_task_buttons').hide();
          $('add_task_in_progress').show();
          project_mgr.request('/projects/'+ project_id + '/task_assignments/add_with_create_new_task', {"task[name]": new_task_name});
        }
    } else {
      $('add_task_buttons').hide();
      $('add_task_in_progress').show();
      project_mgr.request('/projects/'+ project_id + '/task_assignments',  {"task[id]": task_id});
    }
  },

  add_person: function(project_id) {
    var person_id = $F('people-select');
    if(person_id.blank())
      return;
    $('add_person_buttons').hide();
    $('add_person_in_progress').show();
    project_mgr.request('/projects/' + project_id + '/user_assignments/',  {"user[id]": person_id} );
  }

}

/****************************************************************/
/*  original filename salaryman.js                        */
/****************************************************************/


// general purpose function to check / uncheck all checkboxes on a page
function checkUncheckAll(theForm, value) {
  var z = 0;
    for(z=0; z<theForm.length;z++) {
    if(theForm[z].type == 'checkbox' && theForm[z].name != 'checkall'){
        theForm[z].checked = value;
      }
  }
}

// update URL in sign up screen
function updateUrl(subdomain) {
  $('url_name').innerHTML = subdomain + ".harvestapp.com";
}

// suggests a subdomain based on their company name
function suggestSubdomain() {
    var company_name = document.getElementById('company_name').value;
    var subdomain  = company_name.replace(/[^a-zA-Z0-9]/g, "").toLowerCase();
    $('company_subdomain').value = subdomain;
    new Ajax.Updater('subdomain_warning',
                     '/account/check_subdomain',
    { asynchronous:true, evalScripts:true, parameters:$('company_subdomain').value });
}

function enableSubmit(checkbox) {
   $('submit_button').disabled = !checkbox.checked
}

// no need for spam!
function send_email(name, subject) {
  domain = "getharvest.com"
  document.location = "mailto:" + name + "@" + domain + "?subject=" + subject;
}

// shows support getharvest
function print_support_email() {
  var guymal_enc= ":g&ntc`;$kgojri<usvvitrFacrngtpcur(eik$8usvvitrFacrngtpcur(eik:)g8";
  for(guymal_i=0;guymal_i<guymal_enc.length;++guymal_i)
  {
  document.write(String.fromCharCode(6^guymal_enc.charCodeAt(guymal_i)));
  }
}

function send_privacy_email() {
  var guymal_enc= ":g&ntc`;$kgojri<vtopgeFotobcuei(eik9Usdlcer;Vtopge#46Vijoe#46Wscuroihu$8vtopgeFotobcuei(eik:)g8";
  for(guymal_i=0;guymal_i<guymal_enc.length;++guymal_i) {
    document.write(String.fromCharCode(6^guymal_enc.charCodeAt(guymal_i)));
  }
}

function send_support_email() {
  var guymal_enc= ":g&ntc`;$kgojri<usvvitrFacrngtpcur(eik9Usdlcer;NGTPCUR#46Usvvitr$8Rgjm&ri&su:)g8";
  for(guymal_i=0;guymal_i<guymal_enc.length;++guymal_i) {
    document.write(String.fromCharCode(6^guymal_enc.charCodeAt(guymal_i)));
  }
}

function send_tos_email() {
  var guymal_enc= ":g&ntc`;$kgojri<riuFotobcuei(eik9Usdlcer;RIU#46wscuroihu$8riuFotobcuei(eik:)g8";
  for(guymal_i=0;guymal_i<guymal_enc.length;++guymal_i) {
    document.write(String.fromCharCode(6^guymal_enc.charCodeAt(guymal_i)));
  }
}

/*** short cuts to BlindDown & BlindUp, same speed throughout site ***/

function move_div_down(name) {
  new Effect.BlindDown(name, {duration: 0.3});
//  new Element.show(name);
}

function move_div_up(name) {
  new Effect.BlindUp(name, {duration: 0.2});
//  new Element.hide(name);
}

/*** shortcut to the specific movements ***/

// all inline divs (small forms) should use the same way to show up
function show_inline_div(name) {
  move_div_down(name);
}

function hide_inline_div(name) {
  move_div_up(name);
}

// show main divs, such as adding a project
// optional field_name for setting focus
function show_big_div(name, field_name) {
  Element.show(name);
    if(field_name) {
        $(field_name).activate();
    }
}

function hide_big_div(name) {
  move_div_up(name);
}

function show_add_tasks() {
  $('add_form', 'add_task_button').invoke('toggle');
//  move_div_down('add_form');
//  Element.hide('add_task_button');
}

function hide_add_tasks() {
  move_div_up('add_form');
  Element.show('add_task_button');
}

function move_edit_div() {
  //Element.toggle('project_display_form');
  new Effect.BlindDown('project_info_form', {duration: 0.3});
}
function hide_edit_div() {
  //Element.toggle('project_display_form');
  new Effect.BlindUp('project_info_form', {duration: 0.3});
}

function toggle_inactive(user_type) {
  $(user_type + '_inactive_link', user_type + '_inactive_list').invoke('toggle');
}

/****************************************************************/
/*  original filename timesheet.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
var timesheet = {
  register_background_save: function() {
    new PeriodicalExecuter(timesheet.save, 10);
  },

  register_on_change_handlers: function() {
    var children = $('project_task_rows').getElementsByTagName('input');
    for( var i = 0; i < children.length; i++) {
      if ('text' == children[i].type.toLowerCase()) {
        children[i].onchange = timesheet.recompute_sums;
        children[i].onkeypress = timesheet.disable_enter_key;
      }
    }
    timesheet.recompute_sums();
    timesheet.needs_saving = false;
    timesheet.save();
    timesheet.disable_save_progress_button();
  },

  disable_enter_key: function(e){
    e = e || window.event;
    if( (typeof e != 'undefined') && e.keyCode == 13){
      e.cancelBubble = true;
      e.returnValue = false;
      return false;
    }
    return true;
  },

  first_day_in_time_period: '',
  year_of_first_day_in_time_period: '',
  needs_saving: false,
  clients: {},
  first_project_id: 0,
  first_task_id: 0,

  show_static_duration: function(day_entry_id) {
    $('show_hours_' + day_entry_id).innerHTML = "ya";
  },

  show_running_duration: function(day_entry_id) {
    $('show_hours_' + day_entry_id).innerHTML = "yo";
  },

  daily_stopwatch_timer_func: '',
  daily_stopwatch_timer_running_id: '',

  // stops currently running timer
  stop_timer: function() {
    clearInterval( timesheet.daily_stopwatch_timer_func );
    timesheet.daily_stopwatch_timer_func = '';
    timesheet.daily_stopwatch_timer_running_id = '';
  },

  timer_value: 0,

  start_timer: function(day_entry_id){
    if( day_entry_id != ''){
      //invoke every 36 seconds = 0.01 hour
      timesheet.daily_stopwatch_timer_func = setInterval("timesheet.update_active_timer(" + day_entry_id + ")", 36000);
      timesheet.daily_stopwatch_timer_running_id = day_entry_id;
      timesheet.timer_value = hours.parse_as_float($('show_hours_' + day_entry_id).innerHTML);
    }
  },

  //called every 36 seconds
  update_active_timer: function(day_entry_id) {
    var active_hours_counter = $('show_hours_' + day_entry_id);
    if( undefined == active_hours_counter || null == active_hours_counter){
      // entry was deleted clean up timer as well
      timesheet.stop_timer();
      return;
    }
    timesheet.timer_value += 0.01;    // add 36 seconds
    active_hours_counter.innerHTML = hours.display_time(timesheet.timer_value);
    if($('total_duration')){
      timesheet.recompute_day_entry_sums();
    }
  },

  zero_filled_array: function(length){
    var array = new Array(length);
    for( var i = 0; i < length; i++) {
      array[i]=0;
    }
    return array;
  },

  compute_row_and_column_sums: function(){
    var children = $('project_task_rows').getElementsByTagName('input');
    // let's use y days a week as an assumption
    var DAYS_IN_TIME_PERIOD = 7;

    var rowSum = timesheet.zero_filled_array(children.length/DAYS_IN_TIME_PERIOD);
    var colSum = timesheet.zero_filled_array(DAYS_IN_TIME_PERIOD);
    var totalSum = 0;
    var rowPos = 0;
    var colPos = 0;

    // start after the first "prototype" row
    for( var i = DAYS_IN_TIME_PERIOD; i < children.length; i++) {
      if (!hours.zero(children[i].value)) {
        //avoid rounding errors ie: 3355.53 + 660.97 - 660.97 = 3355.5299999999997
        var child_value = hours.parse_as_float(children[i].value) * 100;
        rowSum[rowPos] = rowSum[rowPos] + child_value;
        colSum[colPos] = colSum[colPos] + child_value;
        totalSum = totalSum + child_value;
      }

      colPos++;
      // end of period, get id for output purposes and increase/reset counters
      if (colPos == DAYS_IN_TIME_PERIOD) {
        var match_res = children[i].id.match(/^day\d+_project(\d+)_task(\d+)$/);
        if (match_res.length == 3) {
          var project_id = match_res[1], task_id = match_res[2];
          $('sum_' + row_name(project_id, task_id)).innerHTML = hours.display_time(rowSum[rowPos] / 100);
        }
        colPos = 0;
        rowPos++;
      }
    }
    // update the total row
    $('sum_total').innerHTML = hours.display_time(totalSum / 100);

    for (i = 0; i <DAYS_IN_TIME_PERIOD; i++) {
      $('sum_day' + timesheet.day_of_year(i)).innerHTML = (colSum[i] != 0 ? hours.display_time(colSum[i] / 100) : "<span class=\"zero\">0</span>");
    }
  },

  recompute_sums: function() {
    if(this.id && this.id.match(/^day\d+_project\d+_task\d+/)){
      $('changed_fields').value += ',' + this.id;
      var temp_value = hours.convert_hhmm_to_decimal(this.value);

      //let's make sure if there are too many decimal places, trim it down to 2
      var myFactor =  Math.pow(10, 2);
      temp_value =  Math.round(temp_value * myFactor) / myFactor;
      this.value = hours.display_time(temp_value);
    }

    timesheet.needs_saving = true;
    if (false == timesheet.save_in_progress){
      timesheet.enable_save_progress_button();
    }
    timesheet.compute_row_and_column_sums();
  },

  day_of_year: function(i){
    var year = timesheet.year_of_first_day_in_time_period;
    var days_in_this_year = 337 + (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0) ) ) ? 29 : 28 );
    var day_of_year = timesheet.first_day_in_time_period + i;
    if (day_of_year <= days_in_this_year){
      return day_of_year;
    } else{
      return day_of_year - days_in_this_year;
    }
  },

  // (zs): ugly but we'll make it better using Prototype templates when they
  //       are released and tested.
  construct_project_task_selector: function(prefix, selected_project_id, selected_task_id){
    var project_html = "<select class='tasks_select' id='" + prefix + "project_selector' name='project' onchange=\"timesheet.show_tasks_for_project(this.options[this.selectedIndex].value, '" + prefix + "');\">";
    var task_html = "";
    $A(timesheet.clients).each(function(client) {
        project_html += "<optgroup label='" + client.name + "'>";
        $A(client.projects).each(function(project) {
            var proj_attr = "value='" + project.id + "'";
            var task_attr = "class='tasks_select' id='" + prefix + "project" + project.id + "_task_selector' name='tasks_4_project" + project.id + "'";
            if(project.id == selected_project_id){
              proj_attr += " selected='selected'";
            } else {
              task_attr += " style='display:none' disabled='true'";
            }
            project_html += "<option " + proj_attr + " >" + project.name + "</option>";
            task_html += "<select " + task_attr + ">";
            var add_task_option_groups = function(tasks, label) {
              if(tasks.length > 0){
                task_html += "<optgroup label='" + label + "'>";
                $A(tasks).each( function(task) {
                    var task_selected = (project.id == selected_project_id && task.id == selected_task_id) ? "selected='selected'" : "";
                    task_html += "<option value='" + task.id + "' " + task_selected + ">" + task.name + "</option>";
                  });
                task_html += "</optgroup>";
              }
            };
            add_task_option_groups(project.billable_tasks, 'Billable');
            add_task_option_groups(project.non_billable_tasks, 'Non-billable');
            task_html += "</select>";
          });
      });
    project_html += "</select>";
    if (prefix == '') {
      //no extra formating for prefixless case (used by add_form)
      return project_html + task_html;
    }
    project_html = "" + project_html + "<br />";
    return project_html + "" + task_html + "";
  },

  add_row: function() {
    var result = timesheet.selected_project_id__project_name__client_name();
    var project_id = result[0];
    var project = result[1];
    var client = result[2];
    result = timesheet.selected_task_id__task_name(project_id);
    var task_id = result[0];
    var task = result[1];
    var the_row = row_name(project_id, task_id);
    timesheet.enable_submit_button();
    if ( null == $(the_row)) {
      var row_code = "<tr id=\"projectPROJECTID_taskTASKID\">" + $('projectPROJECTID_taskTASKID').innerHTML + "</tr>";
      row_code = row_code.replace(/PROJECTID/g, project_id).replace(/TASKID/g, task_id).replace(/CLIENT/g, client);
      row_code = row_code.replace(/PROJECT/g, project).replace(/TASK/g, task);
      new Insertion.Bottom('project_task_rows', row_code);
      new Effect.Highlight($('project_task_rows').lastChild);
      timesheet.register_on_change_handlers();
      timesheet.needs_saving = true;
      $('changed_fields').value += ',' + $A($(the_row).getElementsByTagName('input')).pluck('id').join(',');
    } else {
      alert(project + '\'s \"' + task + '\" task was already added!');
    }
  },

  save_in_progress: false,

  remove_row: function(user_id, project_id, task_id, name) {
    if (false == timesheet.save_in_progress) {
      if (confirm("Delete all entries to '"+ name + "' from the current time period?")) {
        var the_row = row_name(project_id, task_id);
        var url = '/entry/remove_row?yday_begin=' + timesheet.first_day_in_time_period;
        url += '&year_begin=' + timesheet.year_of_first_day_in_time_period;
        url += '&project=' + project_id + '&task=' + task_id + '&of_user=' + user_id;
        Effect.Fade(the_row, { afterFinish: function() {
              Element.remove(the_row);
              timesheet.recompute_sums();
              new Ajax.Request(url, {asynchronous:true, evalScripts:true});},
              duration: 0.40});
      }
    } else {
      alert('Background save in progress, please wait a while and retry!');
    }
  },

  disable_save_progress_button: function() {
    // var save_progress_button = $('save-progress-button');
    // save_progress_button.disabled = 'true';
  },

  enable_save_progress_button: function() {
    // var save_progress_button = $('save-progress-button');
    // save_progress_button.disabled = '';
  },

  save: function(custom_after_save) {
    if ( (true == timesheet.needs_saving) && (false == timesheet.save_in_progress)) {
      timesheet.save_in_progress = true;
      timesheet.disable_save_progress_button();
      $('save-indicator').innerHTML = 'saving ...';
      var changed_fields_length = $F('changed_fields').length;
      new Ajax.Request('/entry/save', { evalScripts:true, asynchronous:true, parameters:Form.serialize('timesheet-form'), onComplete: function (request){
            timesheet.save_in_progress = false;
            if(request.status == 200){
              var now = new Date();
              if(request.responseText.match(/^\s*$/)){
                $('save-indicator').innerHTML = 'Last saved at: ' + now.getHours() + ':' + checkTime(now.getMinutes());
                timesheet.enable_submit_button();
                if (typeof custom_after_save == 'function') {
                  custom_after_save();
                }
                $('changed_fields').value = $F('changed_fields').substring(changed_fields_length + 1);
              } else{
                $('save-indicator').innerHTML =  '';
              }
              timesheet.needs_saving = $F('changed_fields').length != 0;
            } else {
              $('save-indicator').innerHTML =  '';
            }
          }
        });
    } else {
      if((false == timesheet.save_in_progress ) && (false == timesheet.needs_saving) && (typeof custom_after_save == 'function')){
        custom_after_save();
      }
    }
    return false;
  },

  // Submits an entry form for a full review process through /daily/review.
  submit_for_full_review: function() {
    var params = {
      of_user: timesheet.current_user_id,
      submitted_date: (new Date().yday()),
      submitted_date_year: (new Date().year()),
      period_begin: timesheet.first_day_in_time_period,
      period_begin_year: timesheet.year_of_first_day_in_time_period
    };
    return timesheet._submit_timesheet_form('/daily/review', params);
  },

  // Submits an entry form for an expenses review process through /daily/review.
  submit_for_approval: function() {
    var params = {
      of_user: timesheet.current_user_id,
      submitted_date: (new Date().yday()),
      submitted_date_year: (new Date().year()),
      period_begin: timesheet.first_day_in_time_period,
      period_begin_year: timesheet.year_of_first_day_in_time_period,
      expenses_only: 'true'
    };
    return timesheet._submit_timesheet_form('/daily/review', params);
  },

  // Submits an entry form with no review.
  submit_timesheet: function() {
    var params = {
      of_user: timesheet.current_user_id,
      submitted_date: (new Date()),
      period_begin: timesheet.first_day_in_time_period,
      period_begin_year: timesheet.year_of_first_day_in_time_period
    };
    return timesheet._submit_timesheet_form('/daily/submit', params);
  },

  _submit_timesheet_form: function(form_action, submit_params) {
    /* First do a real save then submit a dummy review form on complete */
    timesheet.save(function(){
      var submit_form = document.createElement('form');
      submit_form.style.display = 'none';
      $('mainbody').appendChild(submit_form);
      submit_form.method = 'POST';
      submit_form.action = form_action;
      $H(submit_params).each(function(pair) {
          var m = document.createElement('input');
          m.setAttribute('type', 'hidden');
          m.setAttribute('name', pair.key); m.setAttribute('value', pair.value);
          submit_form.appendChild(m);
        });
      // defer submit till DOM updates are taken into account.
      (function(){submit_form.submit();}).defer();
    });
    return false;
  },

  unlock: function() {
    if (confirm('Are you sure you want to unlock this timesheet and allow editing?')) {
      frm = $('timesheet-form');
      frm.action = '/entry/unlock/';
      frm.submit();
    }
  },

  unlock_daily: function() {
    if (confirm('Are you sure you want to unlock this timesheet and allow editing?  This will unlock the entire week this day is associated with.\n\nRe-approve this timesheet to lock the hours when you are done.')) {
      frm = $('daily_form');
      frm.action = '/entry/unlock/';
      frm.submit();
    }
  },

  selected_task_id__task_name: function (project_id) {
    var results = [];
    var task_selector = $('project' + project_id + '_task_selector');
    var selected_option = task_selector.options[task_selector.selectedIndex];
    results.push(selected_option.value);
    results.push(selected_option.innerHTML);
    return results;
  },

  selected_project_id__project_name__client_name: function() {
    var results = [];
    var project_selector = $('project_selector');
    var selected_option = project_selector.options[project_selector.selectedIndex];
    results.push(selected_option.value);
    results.push(selected_option.innerHTML);
    results.push(selected_option.parentNode.label);
    return results;
  },

  show_tasks_for_project: function(project_id, prefix) {
    var new_tasks_selector = $('' + prefix + 'project' + project_id + '_task_selector');
    var filter = new RegExp('^' + prefix + 'project\\d+_task_selector$');
    $$('.tasks_select').each(
        function(e) {
          if (Element.visible(e) && e.id.match(filter)) {
            e.style.display = 'none';
            e.disabled = 'true';
            new_tasks_selector.style.display = '';
            new_tasks_selector.disabled = '';
          }
        }
      );
  },

  day_entry_delete: function(day_entry_id){
    var of_user_id = timesheet.current_user_id;
    if (confirm("Delete this entry?")) {
      new Ajax.Request('/daily/delete/' + day_entry_id + '?of_user=' + of_user_id, {asynchronous:true, evalScripts:true, onComplete: function(request){
            if(request.status == 200){
              if(timesheet.daily_stopwatch_timer_running_id == day_entry_id){
                timesheet.stop_timer();
              }
              Element.remove('day_entry_row_' + day_entry_id);
              timesheet.recompute_day_entry_sums();
            }
          }
        });
    }
  },

  recompute_day_entry_sums: function(){
    var sum = 0;
    $$('#project_task_rows .hours').each(
        function(td) {
          sum += hours.parse_as_float(td.firstChild.nodeValue);
        });
    $('total_duration').innerHTML = hours.display_time(sum);
  },

  current_edited_id: '',

  // toggles the edit day entry fields
  toggle_day_entry_editor: function(id) {
    if (timesheet.current_edited_id == id || timesheet.current_edited_id == '') {
      timesheet.current_edited_id = id;
      timesheet.toggle_day_entry_editor_non_interactive(id);
      if(Element.visible('show_hours_' + id)){
        timesheet.current_edited_id = '';
      }
    } else {
      if(false == Element.visible('update_indicator')) {
        timesheet.toggle_day_entry_editor_non_interactive(timesheet.current_edited_id);
        $('day_entry_' + timesheet.current_edited_id + '_notes').value = $('notes_for_' + timesheet.current_edited_id).innerHTML;
        $('day_entry_' + timesheet.current_edited_id + '_hours').value = $('show_hours_' + timesheet.current_edited_id).innerHTML;
        timesheet.current_edited_id = id;
        timesheet.toggle_day_entry_editor(id);
        timesheet.recompute_day_entry_sums();
      } else {
        alert("Please only edit one entry at a time.");
      }
    }
  },

  toggle_day_entry_editor_non_interactive: function(id){
    $w('show_hours edit_hours notes_for edit_notes day_entry_controls timer_link').invoke('concat', '_', id).map(function(t){return $(t);}).invoke('toggle');
    var cpt = $('client_project_task_' + id);
    var cpt_control = $('client_project_task_controls_' + id);
    //zsombor: IE is verry picky about executing functions on hidden-by-ancestor
    //         elements
    if(cpt.visible() && Element.visible('edit_hours_' + id)) {
      var project_id_task_id = cpt_control.innerHTML.split('.');
      cpt_control.innerHTML = timesheet.construct_project_task_selector(id, project_id_task_id[0], project_id_task_id[1]);
      var hours = $('day_entry_'+ id +'_hours');
      hours.focus();
      hours.select();
    } else {
      var project_id = $('' + id + 'project_selector').value;
      var task_id = $('' + id + 'project' + project_id +'_task_selector').value;
      cpt_control.innerHTML = '' + project_id + '.' + task_id;
    }
    [cpt_control, cpt].invoke('toggle');
  },

  // update the entry that is being edited in the daily view
  update_day_entry: function(id) {
    var of_user_id = timesheet.current_user_id;
    var hours = $('day_entry_' + id + '_hours').value;
    var notes = $('day_entry_' + id + '_notes').value;
    var project_id = $('' + id + 'project_selector').value;
    var task_id = $('' + id + 'project' + project_id +'_task_selector').value;
    var url = '/daily/update/' + id + '?notes=' + encodeURIComponent(notes) + '&hours=' + encodeURIComponent(hours) + '&of_user=' + of_user_id;
    url += '&project_id=' + encodeURIComponent(project_id) + '&task_id=' + encodeURIComponent(task_id);
    Element.show('update_indicator');
    new Ajax.Request(url, {evalScripts:true, asynchronous:true});
    return false;
  },

  daily_control_updating: function(id, updating) {
    $w('edit_link update_indicator').invoke('concat', '_', id).map(function(t){return $(t);}).invoke('hide');
    if (updating == true)
      Element.show('update_indicator_'+ id);
    else
      Element.show('edit_link_' +id);
  },


  toggle_user: function() {
    $('user_selector_link', 'user_selector').invoke('toggle');
  },

  week_selector_on_change: function(to_url, select, user_id){
    var selected = select.options[select.selectedIndex].value.split('.');
    to_url += '/' + selected[0] + '/' + selected[1];
    if( user_id != null ){
      to_url +=  '?of_user=' + user_id;
    }
    if(selected[2] == 'all') {
      if( user_id != null )
        to_url += '&all_weeks=1';
      else
        to_url += '?all_weeks=1';
    }
    window.location = to_url;
  },

  current_user_id: 0,

  check_enter_submit: function(event) {
    if (event.keyCode == Event.KEY_RETURN) {
      var element = Event.element(event);
      var match_res = element.id.match(/(\d+)/);
      if (match_res && match_res.length == 2){
        var day_entry_id = match_res[1];
        timesheet.update_day_entry(day_entry_id, timesheet.current_user_id);
      }
    }
  },

  toggle_add_task_controls: function(){
    $('task_selectors', 'new_task_form', 'create_new_task').invoke('toggle');
    if ($('new_task_form').visible()){
      $('has_new_task').value =  'true';
      var task_name = $('task_name');
      task_name.value = 'task name here';
      task_name.focus();
      task_name.select();
    } else {
      $('has_new_task').value = 'false';
    }
  },

  calendar_url_for_weekly: function(day){
    var variable_part = '';
    if(day != undefined || day != null){
      variable_part = timesheet.dated_url_part(day) + '?of_user=' + timesheet.current_user_id;
    }
    return '/entry/show' + variable_part;
  },

  calendar_url_for_daily: function(day){
    var variable_part = '';
    if(day != undefined || day != null){
      variable_part = '/' + timesheet.current_user_id + timesheet.dated_url_part(day);
    }
    return '/daily' + variable_part;
  },

  dated_url_part: function(day){
    return '/' + day.yday() + '/' + day.year();
  },

  navigate_from_entry: function(url) {
    /* First do a real save then submit a dummy review form on complete */
    timesheet.save(function(){
      window.location = url;
    });
    return false;
  },
  
  enable_submit_button: function() {
    if($('submit_button')) {
      $('submit_button').disabled = false;
      $('submit_button').removeClassName('inactive');
    }
  }

};

function row_name(project_id, task_id) {
  return ('project' + project_id + '_task' + task_id);
}

function checkTime(i) {
  if (i<10) {
    i="0" + i;
  }
  return i;
}

// randomly show tips about the app
function displayTip() {
  var tips = Array(5);
  tips[0] = '<strong>TIP:</strong> Time entries can be in either decimal or HH:MM format.  Example: 2.5 or 2:30';
  tips[1] = '<strong>TIP:</strong> Bookmark this page for quick access in the future.';
  tips[2] = '<strong>TIP:</strong> You can use the Harvest Timer from the Daily timesheets to track your tasks in real-time.';
  tips[3] = '<strong>TIP:</strong> You can use <a href="http://www.getharvest.com/widget" target="_blank">Harvest widgets</a> to track time from your desktop.';
  tips[4] = '<strong>TIP:</strong> You can view time in HH:MM format by changing your settings in Manage &gt; Account details.';

  var ran = Math.round(Math.random()*4);
  document.writeln(tips[ran]);
}

// randomly show tips about the app when user is in daily view
function displayDailyTip() {
  var tips = Array(5);
  tips[0] = '<strong>TIP:</strong> Click on a clock icon to start/stop the corresponding task timer.';
  tips[1] = '<strong>TIP:</strong> Bookmark this page for quick access in the future.';
  tips[2] = '<strong>TIP:</strong> Running timers do not require you to keep your browser open.  Our servers will reliably track your time.';
  tips[3] = '<strong>TIP:</strong> You can use <a href="http://www.getharvest.com/widget" target="_blank">Harvest widgets</a> to track time from your desktop.';
  tips[4] = '<strong>TIP:</strong> You can view time in HH:MM format by changing your settings in Manage &gt; Account details.';

  var ran = Math.round(Math.random()*4);
  document.writeln(tips[ran]);
}

/****************************************************************/
/*  original filename date_extensions.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
// Add some methods with Ruby feeling to Date object, curtesy of Dee Zsombor

var RubyLikeDateMethods = {
  //alias for getFullYear
  year: function(){
    return this.getFullYear();
  },

  //day of year
  yday: function() {
    var year = this.year(), month = this.getMonth(), day = this.getDate();
    return (Date.UTC(year, month, day) - Date.UTC(year, 0, 1)) / 86400000 + 1;
  }
};
Object.extend(Date.prototype, RubyLikeDateMethods);


/****************************************************************/
/*  original filename apple_content_swap.js                        */
/****************************************************************/


/**
* This script swaps content based on classes.  This script adds the 'active' class 
* to selectors and content sections.  Be sure to have the appropriate CSS for
* the 'active' class. Call this script with a selector class and a content class.  
* For example:
* var myContentSwap = new AC.ContentSwap('selectors', 'targets', 'click');
*
* Note: The selectors and content sections must be in the same order.  The first
*       selector will swap the content to the first content section.
*
* @author: stephanie trimble
*
*/                      

if (typeof(AC) == "undefined") { AC = {}; }

AC.ContentSwap = Class.create();
AC.ContentSwap.prototype = {

	selectorList: null,
	contentList: null,
	contentSelectorHash: null,
	eventStr: null,

	initialize: function(selectorClass, contentClass, eventStr) {
	
		this.eventStr = eventStr;
		
		// get lists of selectors and content in order
		this.selectorList = document.getElementsByClassName(selectorClass);
		this.contentList = document.getElementsByClassName(contentClass);
		
		this.setMouseover();
	},
	
	setMouseover: function() {
		for(var i=this.selectorList.length-1, selector;
			selector = this.selectorList[i]; i--) {
			
			Event.observe(selector, this.eventStr, this.swapContent.bind(this, i), false);
			
		}
	},
	
	swapContent: function(selectorIndex) {
		var selector = this.selectorList[selectorIndex];
		var content = this.contentList[selectorIndex];
		
		// add 'on' class
		// if(!Element.hasClassName(selector, 'active')) Element.addClassName(selector, 'active');
		if(!Element.hasClassName(content, 'active')) Element.addClassName(content, 'active');

		// remove 'on' class from all other selectors and content areas
		for(var i=this.selectorList.length-1; i >= 0; i--) {
			if(i != selectorIndex) {
				// if(Element.hasClassName(this.selectorList[i], 'active')) Element.removeClassName(this.selectorList[i], 'active');
				if(Element.hasClassName(this.contentList[i], 'active')) Element.removeClassName(this.contentList[i], 'active');
			}
		}
		
		return false;
	}
}

// Fade swapper
var FadeSwap = Class.create();
Object.extend(Object.extend(FadeSwap.prototype, AC.ContentSwap.prototype), {
	cs1IsAnimating: false,
	cs2IsAnimating: false,

	initialize: function(selectorClass, contentClass, eventStr) {
		Element.addClassName('main', 'hasjs');

		this.eventStr = eventStr;
		
		// get lists of selectors and content in order
		this.selectorList = document.getElementsByClassName(selectorClass);
		this.contentList = document.getElementsByClassName(contentClass);
		for (var i=0; i<this.contentList.length; i++) {
			if (Element.hasClassName(this.contentList[i], 'active')) {
				this.lastSelectorIndex = i;
			} else {
			this.contentList[i].style.display = 'none';
			}
			
		}
		
		this.setMouseover();
	},

	swapContent: function(selectorIndex) {
		if(this.cs1IsAnimating == false && this.cs2IsAnimating == false) {
		
			this.cs1IsAnimating = true;
			this.cs2IsAnimating = true;
			
			var selector = this.selectorList[selectorIndex];
			var content = this.contentList[selectorIndex];
		
			// add 'on' class
			if(!Element.hasClassName(selector, 'active')) Element.addClassName(selector, 'active');
			// remove 'on' class from all other selectors and content areas
			for(var i=this.selectorList.length-1; i >= 0; i--) {
				if(i != selectorIndex) {
					if(Element.hasClassName(this.selectorList[i], 'active')) Element.removeClassName(this.selectorList[i], 'active');
				}
			}
		
			if(selectorIndex != this.lastSelectorIndex) {
				var lastContent = this.contentList[this.lastSelectorIndex];
		
				new Effect.Fade(lastContent, { duration:.25, queue:{position:'end', scope:'cs1'},
					afterFinish:this.afterFade.bind(this, lastContent, content)
				});
				
				this.lastSelectorIndex = selectorIndex;
				
			} else {
				this.resetFlag('cs1IsAnimating');
				this.resetFlag('cs2IsAnimating');
			}
		}
		
		return false;
	},

	afterFade: function(lastContent, content) {
		this.resetFlag('cs1IsAnimating');

		new Effect.Appear(content, { duration:.25, queue:{position:'end', scope:'cs2'},
			afterFinish:this.afterAppear.bind(this, content)
		});
	},

	afterAppear: function(content) {
		this.resetFlag('cs2IsAnimating');
	},

	resetFlag: function(flagName) {
		if(flagName == 'cs1IsAnimating') this.cs1IsAnimating = false;
		if(flagName == 'cs2IsAnimating') this.cs2IsAnimating = false;
	}
});

Event.observe(window, 'load', function() {
	new FadeSwap('swapnav', 'swapcontent', 'click');
}, false);

/****************************************************************/
/*  original filename builder.js                        */
/****************************************************************/


// script.aculo.us builder.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

var Builder = {
  NODEMAP: {
    AREA: 'map',
    CAPTION: 'table',
    COL: 'table',
    COLGROUP: 'table',
    LEGEND: 'fieldset',
    OPTGROUP: 'select',
    OPTION: 'select',
    PARAM: 'object',
    TBODY: 'table',
    TD: 'table',
    TFOOT: 'table',
    TH: 'table',
    THEAD: 'table',
    TR: 'table'
  },
  // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
  //       due to a Firefox bug
  node: function(elementName) {
    elementName = elementName.toUpperCase();
    
    // try innerHTML approach
    var parentTag = this.NODEMAP[elementName] || 'div';
    var parentElement = document.createElement(parentTag);
    try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
      parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
    } catch(e) {}
    var element = parentElement.firstChild || null;
      
    // see if browser added wrapping tags
    if(element && (element.tagName.toUpperCase() != elementName))
      element = element.getElementsByTagName(elementName)[0];
    
    // fallback to createElement approach
    if(!element) element = document.createElement(elementName);
    
    // abort if nothing could be created
    if(!element) return;

    // attributes (or text)
    if(arguments[1])
      if(this._isStringOrNumber(arguments[1]) ||
        (arguments[1] instanceof Array) ||
        arguments[1].tagName) {
          this._children(element, arguments[1]);
        } else {
          var attrs = this._attributes(arguments[1]);
          if(attrs.length) {
            try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
              parentElement.innerHTML = "<" +elementName + " " +
                attrs + "></" + elementName + ">";
            } catch(e) {}
            element = parentElement.firstChild || null;
            // workaround firefox 1.0.X bug
            if(!element) {
              element = document.createElement(elementName);
              for(attr in arguments[1]) 
                element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
            }
            if(element.tagName.toUpperCase() != elementName)
              element = parentElement.getElementsByTagName(elementName)[0];
          }
        } 

    // text, or array of children
    if(arguments[2])
      this._children(element, arguments[2]);

     return element;
  },
  _text: function(text) {
     return document.createTextNode(text);
  },

  ATTR_MAP: {
    'className': 'class',
    'htmlFor': 'for'
  },

  _attributes: function(attributes) {
    var attrs = [];
    for(attribute in attributes)
      attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +
          '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'&quot;') + '"');
    return attrs.join(" ");
  },
  _children: function(element, children) {
    if(children.tagName) {
      element.appendChild(children);
      return;
    }
    if(typeof children=='object') { // array can hold nodes and text
      children.flatten().each( function(e) {
        if(typeof e=='object')
          element.appendChild(e)
        else
          if(Builder._isStringOrNumber(e))
            element.appendChild(Builder._text(e));
      });
    } else
      if(Builder._isStringOrNumber(children))
        element.appendChild(Builder._text(children));
  },
  _isStringOrNumber: function(param) {
    return(typeof param=='string' || typeof param=='number');
  },
  build: function(html) {
    var element = this.node('div');
    $(element).update(html.strip());
    return element.down();
  },
  dump: function(scope) { 
    if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope 
  
    var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
      "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
      "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
      "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
      "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
      "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);
  
    tags.each( function(tag){ 
      scope[tag] = function() { 
        return Builder.node.apply(Builder, [tag].concat($A(arguments)));  
      } 
    });
  }
}

/****************************************************************/
/*  original filename datepicker.js                        */
/****************************************************************/


/**
 * DatePicker widget using Prototype and Scriptaculous.
 * (c) 2007 Mathieu Jondet <mathieu@eulerian.com>
 * Eulerian Technologies
 *
 * DatePicker is freely distributable under the same terms as Prototype.
 *
 */

/**
 * DatePickerFormatter class for matching and stringifying dates.
 *
 * By Arturas Slajus <x11@arturaz.net>.
 */
var DatePickerFormatter = Class.create();
DatePickerFormatter.prototype = {
    /**
     * Create a DatePickerFormatter.
     *
     * format: specify a format by passing 3 value array consisting of
     *   "yyyy", "mm", "dd". Default: ["yyyy", "mm", "dd"].
     *
     * separator: string for splitting the values. Default: "-".
     *
     * Use it like this:
     *   var df = new DatePickerFormatter(["dd", "mm", "yyyy"], "/");
     *   df.current_date();
     *   df.match("7/7/2007");
     */
    initialize: function(format, separator) {
        if (Object.isUndefined(format))
     format = ["yyyy", "mm", "dd"];
        if (Object.isUndefined(separator))
     separator = "-";

        this._format    = format;
        this.separator  = separator;

        this._format_year_index = format.indexOf("yyyy");
        this._format_month_index= format.indexOf("mm");
        this._format_day_index  = format.indexOf("dd");

        this._year_regexp   = /^\d{4}$/;
        this._month_regexp  = /^0\d|1[012]|\d$/;
        this._day_regexp    = /^0\d|[12]\d|3[01]|\d$/;
    },

    /**
     * Match a string against date format.
     * Returns: [year, month, day]
     */
    match: function(str) {
        var d = str.split(this.separator);

        if (d.length < 3)
     return false;

        var year = d[this._format_year_index].match(this._year_regexp);
        if (year) { year = year[0] } else { return false }
        var month = d[this._format_month_index].match(this._month_regexp);
        if (month) { month = month[0] } else { return false }
        var day = d[this._format_day_index].match(this._day_regexp);
        if (day) { day = day[0] } else { return false }

        return [year, month, day];
    },

    /**
     * Return current date according to format.
     */
    current_date: function() {
        var d = new Date;
        return this.date_to_string(
            d.getFullYear(),
            d.getMonth() + 1,
            d.getDate()
       );
    },

    /**
     * Return a stringified date accordint to format.
     */
    date_to_string: function(year, month, day, separator) {
        if (Object.isUndefined(separator))
     separator = this.separator;

        var a = [0, 0, 0];
        a[this._format_year_index]  = year;
        a[this._format_month_index]     = month.toPaddedString(2);
        a[this._format_day_index]   = day.toPaddedString(2);

        return a.join(separator);
    }
};


/**
 * DatePicker
 */

var DatePicker  = Class.create();

DatePicker.prototype    = {
 Version    : '0.9.4',
 _relative  : null,
 _div       : null,
 _zindex    : 100,
 _keepFieldEmpty: false,
 _daysInMonth   : [31,28,31,30,31,30,31,31,30,31,30,31],
 _dateFormat    : [ ["mm", "dd", "yyyy"], "/" ],
 /* language */
 _language  : 'en',
 _language_month    : $H({
  'en'  : [ 'January', 'February', 'March', 'April', 'May',
   'June', 'July', 'August', 'September', 'October', 'November', 'December' ]
 }),
 _language_day  : $H({
  'en'  : [ 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun' ]
 }),
 _language_close    : $H({
  'en'  : 'CLOSE'
 }),
 /* date manipulation */
 _todayDate     : new Date(),
 _current_date      : null,
 _clickCallback     : Prototype.emptyFunction,
 _cellCallback      : Prototype.emptyFunction,
 _id_datepicker     : null,
 _disablePastDate   : false,
 _disableFutureDate : false,
 _enableYearBrowse  : false,
 _oneDayInMs        : 24 * 3600 * 1000,
 /* positionning */
 _topOffset     : 30,
 _leftOffset        : 0,
 _isPositionned     : false,
 _relativePosition  : true,
 _setPositionTop    : 0,
 _setPositionLeft   : 0,
 _bodyAppend        : false,
 _contentAppend     : '',
 _showEvent     : 'click',
 /* Effects Adjustment */
 _showEffect        : "appear",
 _showDuration      : 0.3,
 _enableShowEffect  : true,
 _closeEffect       : "fade",
 _closeEffectDuration   : 0.3,
 _enableCloseEffect     : true,
 _closeTimer        : null,
 _enableCloseOnBlur : false,
 /* afterClose : called when the close function is executed */
 _afterClose    : Prototype.emptyFunction,
 /* return the name of current month in appropriate language */
 getMonthLocale : function ( month ) {
  return    this._language_month.get(this._language)[month];
 },
 getLocaleClose : function () {
  return    this._language_close.get(this._language);
 },

 set_to_current: function(){
   this._current_date = this._df.current_date();
   /* set the field value ? */
   if (!this._keepFieldEmpty)
     $(this._relative).value = this._current_date;
 },

 _initCurrentDate : function () {
  /* Create the DateFormatter */
  this._df = new DatePickerFormatter(this._dateFormat[0], this._dateFormat[1]);
  /* check if value in field is proper, if not set to today */
  this._current_date = $F(this._relative);
  if (! this._df.match(this._current_date)) {
    if(this._current_date.match(/-/)){
      this._dateFormat = [this._dateFormat[0], '-'];
      this._df = new DatePickerFormatter(this._dateFormat[0], this._dateFormat[1]);
      if (! this._df.match(this._current_date)){
        this.set_to_current();
      }
    } else {
      this.set_to_current();
    }
  }
  var a_date = this._df.match(this._current_date);
  this._current_year    = Number(a_date[0]);
  this._current_mon = Number(a_date[1]) - 1;
  this._current_day = Number(a_date[2]);
 },
 /* init */
 initialize : function ( h_p ) {
  /* arguments */
  this._relative= h_p["relative"];
  this._controller= h_p["controller"];
  if (h_p["language"])
   this._language = h_p["language"];
  this._zindex  = ( h_p["zindex"] ) ? parseInt(Number(h_p["zindex"])) : this._zindex;
  if (!Object.isUndefined(h_p["keepFieldEmpty"]))
   this._keepFieldEmpty = h_p["keepFieldEmpty"];
  if (Object.isFunction(h_p["clickCallback"]))
   this._clickCallback  = h_p["clickCallback"];
  if (!Object.isUndefined(h_p["leftOffset"]))
   this._leftOffset = parseInt(h_p["leftOffset"]);
  if (!Object.isUndefined(h_p["topOffset"]))
   this._topOffset  = parseInt(h_p["topOffset"]);
  if (!Object.isUndefined(h_p["relativePosition"]))
   this._relativePosition = h_p["relativePosition"];
  if (!Object.isUndefined(h_p["showEvent"]))
   this._showEvent  = h_p["showEvent"];
  if (!Object.isUndefined(h_p["showEffect"]))
   this._showEffect     = h_p["showEffect"];
  if (!Object.isUndefined(h_p["contentAppend"]))
   this._contentAppend  = h_p["contentAppend"];
  if (!Object.isUndefined(h_p["enableShowEffect"]))
   this._enableShowEffect   = h_p["enableShowEffect"];
  if (!Object.isUndefined(h_p["showDuration"]))
   this._showDuration   = h_p["showDuration"];
  if (!Object.isUndefined(h_p["closeEffect"]))
   this._closeEffect    = h_p["closeEffect"];
  if (!Object.isUndefined(h_p["enableCloseEffect"]))
   this._enableCloseEffect  = h_p["enableCloseEffect"];
  if (!Object.isUndefined(h_p["closeEffectDuration"]))
   this._closeEffectDuration = h_p["closeEffectDuration"];
  if (Object.isFunction(h_p["afterClose"]))
   this._afterClose = h_p["afterClose"];
  if (!Object.isUndefined(h_p["externalControl"]))
   this._externalControl= h_p["externalControl"];
  if (!Object.isUndefined(h_p["dateFormat"]))
   this._dateFormat = h_p["dateFormat"];
  if (Object.isFunction(h_p["cellCallback"]))
   this._cellCallback   = h_p["cellCallback"];
  this._setPositionTop  = ( h_p["setPositionTop"] ) ?
   parseInt(Number(h_p["setPositionTop"])) : 0;
  this._setPositionLeft = ( h_p["setPositionLeft"] ) ?
   parseInt(Number(h_p["setPositionLeft"])) : 0;
  if (!Object.isUndefined(h_p["enableCloseOnBlur"]) && h_p["enableCloseOnBlur"])
   this._enableCloseOnBlur  = true;
  if (!Object.isUndefined(h_p["disablePastDate"]) && h_p["disablePastDate"])
   this._disablePastDate    = true;
  if (!Object.isUndefined(h_p["disableFutureDate"]) &&
   !h_p["disableFutureDate"])
   this._disableFutureDate  = false;
  if (!Object.isUndefined(h_p["enableYearBrowse"]))
   this._enableYearBrowse   = true;
  this._id_datepicker       = 'datepicker-'+this._relative;
  this._id_datepicker_prev  = this._id_datepicker+'-prev';
  this._id_datepicker_next  = this._id_datepicker+'-next';
  this._id_datepicker_prev_year = this._id_datepicker_prev+'-year';
  this._id_datepicker_next_year = this._id_datepicker_next+'-year';
  this._id_datepicker_hdr   = this._id_datepicker+'-header';
  this._id_datepicker_ftr   = this._id_datepicker+'-footer';

  /* build up calendar skel */
  this._div = new Element('div', {
   id : this._id_datepicker,
   className : 'datepicker',
   style : 'display: none; z-index:'+this._zindex });
  this._div.innerHTML = '<table><thead><tr>'+((this._enableYearBrowse) ? '<th width="10px" id="'+this._id_datepicker_prev_year+'" style="cursor: pointer;">&nbsp;&lt;&nbsp;</th>' : '')+'<th width="10px" id="'+this._id_datepicker_prev+'" style="cursor: pointer;">&nbsp;&lt;&lt;&nbsp;</th><th id="'+this._id_datepicker_hdr+'" colspan="'+((this._enableYearBrowse) ? 3 : 5 )+'"></th><th width="10px" id="'+this._id_datepicker_next+'" style="cursor: pointer;">&nbsp;&gt;&gt;&nbsp;</th>'+((this._enableYearBrowse) ? '<th width="10px" id="'+this._id_datepicker_next_year+'" style="cursor: pointer;">&nbsp;&gt;&nbsp;</th>' : '')+'</tr></thead><tbody id="'+this._id_datepicker+'-tbody"></tbody><tfoot><td colspan="7" id="'+this._id_datepicker_ftr+'"></td></tfoot></table>';
  /* finally declare the event listener on input field */
  Event.observe(this._relative,
    this._showEvent, this.click.bindAsEventListener(this), false);
  /* need to append on body when doc is loaded for IE */
  document.observe('dom:loaded', this.load.bindAsEventListener(this), false);
  /* automatically close when blur event is triggered */
  if ( this._enableCloseOnBlur ) {
   Event.observe(this._relative, 'blur', function (e) {
    this._closeTimer = this.close.bind(this).delay(0.1);
   }.bindAsEventListener(this));
   Event.observe(this._div, 'click', function (e) {
    if (this._closeTimer) {
     window.clearTimeout(this._closeTimer);
     this._closeTimer = null;
    }
   });
  }
 },
 /**
  * load    : called when document is fully-loaded to append datepicker
  *       to main object.
  */
 load       : function () {
  /* if externalControl defined set the observer on it */
  if (this._externalControl)
   Event.observe(this._externalControl, 'click',
    this.click.bindAsEventListener(this), false);
  /* append to page */
  if (this._relativeAppend) {
   /* append to parent node */
   if ($(this._relative).parentNode) {
    this._div.innerHTML = this._wrap_in_iframe(this._div.innerHTML);
    $(this._relative).parentNode.appendChild( this._div );
   }
  } else {
   /* append to body tag or to provided contentAppend id */
   var body = ( this._contentAppend ) ?
    $(this._contentAppend) : document.getElementsByTagName("body").item(0);
   if (body) {
    this._div.innerHTML = this._wrap_in_iframe(this._div.innerHTML);
    body.appendChild(this._div);
   }
   if ( this._relativePosition ) {
     var a_pos = (this._externalControl) ? Element.cumulativeOffset($(this._externalControl)) : Element.cumulativeOffset($(this._relative));
     this.setPosition(a_pos[1], a_pos[0]);
   } else {
    if (this._setPositionTop || this._setPositionLeft)
     this.setPosition(this._setPositionTop, this._setPositionLeft);
   }
  }
  /* init the date in field if needed */
  this._initCurrentDate();
  /* set the close locale content */
  $(this._id_datepicker_ftr).innerHTML = this.getLocaleClose();
  /* declare the observers for UI control */
  Event.observe($(this._id_datepicker_prev),
    'click', this.prevMonth.bindAsEventListener(this), false);
  Event.observe($(this._id_datepicker_next),
    'click', this.nextMonth.bindAsEventListener(this), false);
  if ( this._enableYearBrowse ) {
   Event.observe($(this._id_datepicker_prev_year),
     'click', this.prevYear.bindAsEventListener(this), false);
   Event.observe($(this._id_datepicker_next_year),
     'click', this.nextYear.bindAsEventListener(this), false);
  }
  Event.observe($(this._id_datepicker_ftr),
    'click', this.close.bindAsEventListener(this), false);
 },
 /* hack for buggy form elements layering in IE */
 _wrap_in_iframe    : function ( content ) {
  var _iframe_src   = '/blank.html';
  return    ( Prototype.Browser.IE ) ?
   "<div style='height:167px;width:185px;background-color:white;align:left'><iframe width='100%' height='100%' marginwidth='0' marginheight='0' frameborder='0' src='"+ _iframe_src +"' style='filter:alpha(Opacity=50);'></iframe><div style='position:absolute;background-color:white;top:2px;left:2px;width:180px'>" + content + "</div></div>" : content;
 },
 /**
  * visible : return the visibility status of the datepicker.
  */
 visible    : function () {
  return    ( $(this._id_datepicker) ) ?
   $(this._id_datepicker).visible() : false;
 },
 /**
  * click   : called when input element is clicked
  */
 click      : function () {
  /* init the datepicker if it doesn't exists */
  if ( $(this._id_datepicker) == null ) this.load();
  if (this._relativePosition) {
    /* position the datepicker relatively to element */
    var a_pos = (this._externalControl) ? Element.cumulativeOffset($(this._externalControl)) : Element.cumulativeOffset($(this._relative));
    this.setPosition(a_pos[1], a_pos[0]);
    this._isPositionned  = true;
  }
  if (!this.visible()) {
   this._initCurrentDate();
   this._redrawCalendar();
  }
  /* eval the clickCallback function */
  eval(this._clickCallback());
  /* Effect toggle to fade-in / fade-out the datepicker */
  if ( this._enableShowEffect ) {
   new Effect.toggle(this._id_datepicker,
     this._showEffect, { duration: this._showDuration });
  } else {
   $(this._id_datepicker).show();
  }
  /* clean timer */
  if (this._closeTimer) {
   window.clearTimeout(this._closeTimer);
   this._closeTimer = null;
  }
 },
 /**
  * close   : called when the datepicker is closed
  */
 close      : function () {
  if ( this._enableCloseEffect ) {
   switch(this._closeEffect) {
    case 'puff':
     new Effect.Puff(this._id_datepicker, {
      duration : this._closeEffectDuration });
     break;
    case 'blindUp':
     new Effect.BlindUp(this._id_datepicker, {
      duration : this._closeEffectDuration });
     break;
    case 'dropOut':
     new Effect.DropOut(this._id_datepicker, {
      duration : this._closeEffectDuration });
     break;
    case 'switchOff':
     new Effect.SwitchOff(this._id_datepicker, {
      duration : this._closeEffectDuration });
     break;
    case 'squish':
     new Effect.Squish(this._id_datepicker, {
      duration : this._closeEffectDuration });
     break;
    case 'fold':
     new Effect.Fold(this._id_datepicker, {
      duration : this._closeEffectDuration });
     break;
    case 'shrink':
     new Effect.Shrink(this._id_datepicker, {
      duration : this._closeEffectDuration });
     break;
    default:
     new Effect.Fade(this._id_datepicker, {
      duration : this._closeEffectDuration });
     break;
   };
  } else {
   $(this._id_datepicker).hide();
  }
  eval(this._afterClose());
 },
 /**
  * setDateFormat
  */
 setDateFormat  : function ( format, separator ) {
  if (Object.isUndefined(format))
   format   = this._dateFormat[0];
  if (Object.isUndefined(separator))
   separator    = this._dateFormat[1];
  this._dateFormat  = [ format, separator ];
 },
 /**
  * setPosition : set the position of the datepicker.
  *  param : t=top | l=left
  */
 setPosition    : function ( t, l ) {
  var h_pos = { 'top' : '0px', 'left' : '0px' };
  if (!Object.isUndefined(t))
   h_pos['top'] = Number(t)+this._topOffset+'px';
  if (!Object.isUndefined(l))
   h_pos['left']= Number(l)+this._leftOffset+'px';
  $(this._id_datepicker).setStyle(h_pos);
  this._isPositionned   = true;
 },
 /**
  * _getMonthDays : given the year and month find the number of days.
  */
 _getMonthDays  : function ( year, month ) {
  if (((0 == (year%4)) &&
   ( (0 != (year%100)) || (0 == (year%400)))) && (month == 1))
   return 29;
  return this._daysInMonth[month];
 },
 /**
  * _buildCalendar  : draw the days array for current date
  */
 _buildCalendar     : function () {
  var _self = this;
  var tbody = $(this._id_datepicker+'-tbody');
  try {
   while ( tbody.hasChildNodes() )
    tbody.removeChild(tbody.childNodes[0]);
  } catch ( e ) {};
  /* generate day headers */
  var trDay = new Element('tr');
  this._language_day.get(this._language).each( function ( item ) {
   var td   = new Element('td');
   td.innerHTML = item;
   td.className = 'wday';
   trDay.appendChild( td );
  });
  tbody.appendChild( trDay );
  /* generate the content of days */

  /* build-up days matrix */
  var a_d   = [ [ 0, 0, 0, 0, 0, 0, 0 ] ,[ 0, 0, 0, 0, 0, 0, 0 ]
   ,[ 0, 0, 0, 0, 0, 0, 0 ], [ 0, 0, 0, 0, 0, 0, 0 ], [ 0, 0, 0, 0, 0, 0, 0 ]
   ,[ 0, 0, 0, 0, 0, 0, 0 ]
  ];
  /* set date at beginning of month to display */
  var d     = new Date(this._current_year, this._current_mon, 1, 12);
  /* start the day list on monday */
  var startIndex    = ( !d.getDay() ) ? 6 : d.getDay() - 1;
  var nbDaysInMonth = this._getMonthDays(
    this._current_year, this._current_mon);
  var daysIndex     = 1;
  for ( var j = startIndex; j < 7; j++ ) {
   a_d[0][j]    = {
     d : daysIndex
    ,m : this._current_mon
    ,y : this._current_year
   };
   daysIndex++;
  }
  var a_prevMY  = this._prevMonthYear();
  var nbDaysInMonthPrev = this._getMonthDays(a_prevMY[1], a_prevMY[0]);
  for ( var j = 0; j < startIndex; j++ ) {
   a_d[0][j]    = {
     d : Number(nbDaysInMonthPrev - startIndex + j + 1)
    ,m : Number(a_prevMY[0])
    ,y : a_prevMY[1]
    ,c : 'outbound'
   };
  }
  var switchNextMonth   = false;
  var currentMonth  = this._current_mon;
  var currentYear   = this._current_year;
  for ( var i = 1; i < 6; i++ ) {
   for ( var j = 0; j < 7; j++ ) {
    a_d[i][j]   = {
      d : daysIndex
     ,m : currentMonth
     ,y : currentYear
     ,c : ( switchNextMonth ) ? 'outbound' : (
      ((daysIndex == this._todayDate.getDate()) &&
        (this._current_mon  == this._todayDate.getMonth()) &&
        (this._current_year == this._todayDate.getFullYear())) ? 'today' : null)
    };
    daysIndex++;
    /* if at the end of the month : reset counter */
    if (daysIndex > nbDaysInMonth ) {
     daysIndex  = 1;
     switchNextMonth = true;
     if (this._current_mon + 1 > 11 ) {
      currentMonth = 0;
      currentYear += 1;
     } else {
      currentMonth += 1;
     }
    }
   }
  }
  /* generate days for current date */
  for ( var i = 0; i < 6; i++ ) {
   var tr   = new Element('tr');
   for ( var j = 0; j < 7; j++ ) {
    var h_ij    = a_d[i][j];
    var td  = new Element('td');
    /* id is : datepicker-day-mon-year or depending on language other way */
    /* don't forget to add 1 on month for proper formmatting */
    var id  = $A([
     this._relative,
     this._df.date_to_string(h_ij["y"], h_ij["m"]+1, h_ij["d"], '-')
    ]).join('-');
    /* set id and classname for cell if exists */
    td.setAttribute('id', id);
    if (h_ij["c"])
     td.className   = h_ij["c"];
    /* on onclick : rebuild date value from id of current cell */
    var _curDate    = new Date();
    _curDate.setFullYear(h_ij["y"], h_ij["m"], h_ij["d"]);
    if ( this._disablePastDate || this._disableFutureDate ) {
     if ( this._disablePastDate ) {
      var _res  = ( _curDate >= this._todayDate ) ? true : false;
      this._bindCellOnClick( td, true, _res, h_ij["c"] );
     }
     if ( this._disableFutureDate ) {
      var _res  = ( this._todayDate.getTime() + this._oneDayInMs > _curDate.getTime() ) ? true : false;
      this._bindCellOnClick( td, true, _res,  h_ij["c"] );
     }
    } else {
     this._bindCellOnClick( td, false );
    }
    td.innerHTML= h_ij["d"];
    tr.appendChild( td );
   }
   tbody.appendChild( tr );
  }
  return    tbody;
 },
 /**
  * _bindCellOnClick    : bind the cell onclick depending on status.
  */
 _bindCellOnClick   : function ( td, wcompare, compareresult, h_ij_c ) {
  var doBind    = false;
  if ( wcompare ) {
   if ( compareresult ) {
    doBind  = true;
   } else {
    td.className= ( h_ij_c ) ? 'nclick_outbound' : 'nclick';
   }
  } else {
   doBind   = true;
  }
  if ( doBind ) {
   var _self    = this;
   td.onclick   = function () {
    $(_self._relative).value = String($(this).readAttribute('id')
      ).replace(_self._relative+'-','').replace(/-/g, _self._df.separator);
    /* if we have a cellCallback defined call it and pass it the cell */
    if (_self._cellCallback)
     _self._cellCallback(this);
    _self.close();
    if(_self._controller) DatePickerHelper.redirectToDate(new Date($(_self._relative).value), _self._controller);
   };
  }
 },
 /**
  * nextMonth   : redraw the calendar content for next month.
  */
 _nextMonthYear : function () {
  var c_mon = this._current_mon;
  var c_year    = this._current_year;
  if (c_mon + 1 > 11) {
   c_mon    = 0;
   c_year   += 1;
  } else {
   c_mon    += 1;
  }
  return    [ c_mon, c_year ];
 },
 nextMonth  : function () {
  var a_next    = this._nextMonthYear();
  var _nextMon  = a_next[0];
  var _nextYear = a_next[1];
  var _curDate  = new Date(); _curDate.setFullYear(_nextYear, _nextMon, 1);
  var _res  = ( this._todayDate.getTime() + this._oneDayInMs > _curDate.getTime() ) ? true : false;
  if ( this._disableFutureDate && !_res )
   return;
  this._current_mon = _nextMon;
  this._current_year    = _nextYear;
  this._redrawCalendar();
 },
 /**
  * prevMonth   : redraw the calendar content for previous month.
  */
 _prevMonthYear : function () {
  var c_mon = this._current_mon;
  var c_year    = this._current_year;
  if (c_mon - 1 < 0) {
   c_mon    = 11;
   c_year   -= 1;
  } else {
   c_mon    -= 1;
  }
  return    [ c_mon, c_year ];
 },
 prevMonth  : function () {
  var a_prev    = this._prevMonthYear();
  var _prevMon  = a_prev[0];
  var _prevYear = a_prev[1];
  var _curDate  = new Date(); _curDate.setFullYear(_prevYear, _prevMon, 1);
  var _res  = ( _curDate >= this._todayDate ) ? true : false;
  if ( this._disablePastDate && !_res && (_prevMon!=this._todayDate.getMonth()))
   return;
  this._current_mon = _prevMon;
  this._current_year    = _prevYear;
  this._redrawCalendar();
 },
 /**
  * prevYear    : redraw the calendar content for prev year.
  */
 _prevYear  : function () {
  var c_mon = this._current_mon;
  var c_year    = (this._current_year - 1);

  return    [ c_mon, c_year ];
 },
 prevYear   : function () {
  var a_next    = this._prevYear();
  var _nextMon  = a_next[0];
  var _nextYear = a_next[1];
  var _curDate  = new Date(); _curDate.setFullYear(_nextYear, _nextMon, 1);
  var _res  = ( this._todayDate.getTime() + this._oneDayInMs > _curDate.getTime() ) ? true : false;
  if ( this._disableFutureDate && !_res )
   return;
  this._current_mon = _nextMon;
  this._current_year    = _nextYear;
  this._redrawCalendar();
 },

 /**
  * nextYear    : redraw the calendar content for next year.
  */
 _nextYear  : function () {
  var c_mon = this._current_mon;
  var c_year    = (this._current_year + 1);

  return    [ c_mon, c_year ];
 },
 nextYear   : function () {
  var a_next    = this._nextYear();
  var _nextMon  = a_next[0];
  var _nextYear = a_next[1];
  var _curDate  = new Date(); _curDate.setFullYear(_nextYear, _nextMon, 1);
  var _res  = ( this._todayDate.getTime() + this._oneDayInMs > _curDate.getTime() ) ? true : false;
  if ( this._disableFutureDate && !_res )
   return;
  this._current_mon = _nextMon;
  this._current_year    = _nextYear;
  this._redrawCalendar();
 },

 _redrawCalendar    : function () {
  this._setLocaleHdr(); this._buildCalendar();
 },
 _setLocaleHdr  : function () {
  /* next link */
  var a_next    = this._nextMonthYear();
  $(this._id_datepicker_next).setAttribute('title',
   this.getMonthLocale(a_next[0])+' '+a_next[1]);
  /* prev link */
  var a_prev    = this._prevMonthYear();
  $(this._id_datepicker_prev).setAttribute('title',
   this.getMonthLocale(a_prev[0])+' '+a_prev[1]);
  /* year browse */
  if ( this._enableYearBrowse ) {
   var a_next_y = this._nextYear();
   $(this._id_datepicker_next_year).setAttribute('title',
     this.getMonthLocale(a_next_y[0])+' '+a_next_y[1]);
   var a_prev_y = this._prevYear();
   $(this._id_datepicker_prev_year).setAttribute('title',
     this.getMonthLocale(a_prev_y[0])+' '+a_prev_y[1]);
  }
  /* header */
  $(this._id_datepicker_hdr).update('&nbsp;&nbsp;&nbsp;'+this.getMonthLocale(this._current_mon)+'&nbsp;'+this._current_year+'&nbsp;&nbsp;&nbsp;');
 }
};
var DatePickerHelper = {
  redirectToDate: function(day, controller) {
    window.location = controller(day);
  }

}

/****************************************************************/
/*  original filename expense.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
var expense = {
  current_user_id: 0,
  active_edit_expense_id: '',
  active_edit_expense_values: {},
  mileage_category_id: '',
  specific_year: '',
  specific_day: '',

  clear_active_edit_expense_id: function() {
    expense.active_edit_expense_id = '';
  },

  recompute_expense_entry_costs: function() {
    $('total_amount').innerHTML = expense.number_to_currency(expense._calculate_expense_entry_costs());
  },

  _calculate_expense_entry_costs: function() {
    return $$('#user_expense_rows .cost').pluck('innerHTML').inject(0,
      function(sum, e) {
        return sum + (expense.parse_float_with_currencies(e) || 0);
      }
    ).toFixed(2);
  },

  calendar_url_for_weekly: function(day){
    var variable_part = '';
    if(day != undefined || day != null){
      variable_part = '/' + expense.current_user_id + expense.dated_url_part(day);
    }
    return '/expenses' + variable_part;
  },

  dated_url_part: function(day) {
    return '/' + day.yday() + '/' + day.year();
  },

  show_add_expense_form: function() {
    if(!$('add_expense_form').visible()) {
      $('add_expense_form').show();
      expense.initialize_add_expense_form();
    }
  },

  initialize_add_expense_form: function() {
    // TODO: EXPENSES: Initialize selection of date.  Today if possible?
    $('expense_project_id').value = "";
    $('expense_expense_category_id').value = "";
    $('expense_total_cost').value = "";
    $('expense_notes').value = "";
    $('expense_spent_at').focus();
  },

  validate_expense_form: function(id) {
    var errors = [];

    var project_id = id ? $F('expense-' + id + '-project-id') : $F('expense_project_id');
    if("" == project_id) {
      errors.push('project');
    }

    var expense_category_id = id ? $F('expense-' + id + '-expense-category-id') : $F('expense_expense_category_id')
    if("" == expense_category_id) {
      errors.push('expense category');
    }

    var expense_total_amount = id ? $F('expense-' + id + '-total-cost') : $F('expense_total_cost');
    expense_total_amount = expense_total_amount || (id ? $F('expense-' + id + '-units') : $F('expense_units'));
    // If expense total cost is unparseable, there is in error in its value.
    if(!parseFloat(expense_total_amount) || (parseFloat(expense_total_amount) < 0)) {
      errors.push('amount');
    }

    if(errors.size() > 0) {
      //alert("Please check: " + errors.join(', '));
      alert("Please make sure that you have selected a project and an expense category.  For expense amount, it must be in a valid currency format, e.g. '12.65'.")
      return false;
    } else {
      return true;
    }
  },

  toggle_expense_row: function(id) {
    if(expense.active_edit_expense_id != id) {

      // Only attempt to toggle prior row and resent expense form values if a row was actually active
      if(expense.active_edit_expense_id != '') {
        if($('expense-' + expense.active_edit_expense_id + '-entry-form').visible()) {
          $('expense-' + expense.active_edit_expense_id + '-entry-form').toggle();
          $('expense-' + expense.active_edit_expense_id + '-entry-row').toggle();
        }
        expense.reset_expense_entry_edit_values(expense.active_edit_expense_id);
      }

      // Only reset the id and initial expense values upon editing a new row
      expense.active_edit_expense_id = id;
      expense.save_active_edit_expense_values(id);
    }

    $('expense-' + id + '-entry-row').toggle();
    $('expense-' + id + '-entry-form').toggle();
  },

  toggle_amount_inputs: function(id) {
    var dom_id            = id ? 'expense-' + id + '-expense-category-id' : 'expense_expense_category_id';
    var mileage_dom_id    = id ? 'expense-' + id + '-mileage-amount'      : 'expense_mileage_amount';
    var total_cost_dom_id = id ? 'expense-' + id + '-total-cost-amount'   : 'expense_total_cost_amount';

    if($F(dom_id) == expense.mileage_category_id) {
      $(mileage_dom_id).show();
      $(total_cost_dom_id).down().value = '';
      $(total_cost_dom_id).hide();
    } else {
      $(total_cost_dom_id).show();
      $(mileage_dom_id).down().value = '';
      $(mileage_dom_id).hide();
    }
  },

  // Save off the original expense form values in case edit form is toggled off and
  // the values need reset to their original state.
  save_active_edit_expense_values: function(id) {
    active_edit_expense_values = {
      spent_at: $F('expense-' + id + '-spent-at'),
      project_id: $F('expense-' + id + '-project-id'),
      expense_category_id: $F('expense-' + id + '-expense-category-id'),
      total_cost: $F('expense-' + id + '-total-cost'),
      units: $F('expense-' + id + '-units'),
      notes: $F('expense-' + id + '-notes')
    }
  },

  // Reset expense edit form values based on what is stored in active_edit_expense_values
  reset_expense_entry_edit_values: function(id) {
    $('expense-' + id + '-spent-at').value = active_edit_expense_values.spent_at;
    $('expense-' + id + '-project-id').value = active_edit_expense_values.project_id;
    $('expense-' + id + '-expense-category-id').value = active_edit_expense_values.expense_category_id;
    $('expense-' + id + '-total-cost').value = active_edit_expense_values.total_cost;
    $('expense-' + id + '-units').value = active_edit_expense_values.units;
    $('expense-' + id + '-notes').value = active_edit_expense_values.notes;

        // Show appropriate total cost/mileage input fields
        if($F('expense-' + id + '-expense-category-id') == expense.mileage_category_id) {
            $('expense-' + id + '-mileage-amount').show();
            $('expense-' + id + '-total-cost-amount').hide();
        } else {
            $('expense-' + id + '-total-cost-amount').show();
            $('expense-' + id + '-mileage-amount').hide();
        }
  },

  // update the entry that is being edited in the daily view
  update_expense_entry: function(id) {
    var user_id = expense.current_user_id;
    var spent_at = $F('expense-' + id + '-spent-at');
    var project_id = $F('expense-' + id + '-project-id');
    var expense_category_id = $F('expense-' + id + '-expense-category-id');
    var total_cost = $F('expense-' + id + '-total-cost');
    var units = $F('expense-' + id + '-units');
    var notes = $F('expense-' + id + '-notes');

    var url = '/expenses/' + id +
              '?of_user=' + user_id +
              '&expense[spent_at]=' + encodeURIComponent(spent_at) +
              '&expense[project_id]=' + encodeURIComponent(project_id) +
              '&expense[expense_category_id]=' + encodeURIComponent(expense_category_id) +
              '&expense[total_cost]=' + encodeURIComponent(total_cost) +
              '&expense[units]=' + encodeURIComponent(units) +
              '&expense[notes]=' + encodeURIComponent(notes)

        // Add year/day parameters if dealing with an expense for a specific week.
        if(expense.specific_year && expense.specific_day) {
            url += '&year=' + encodeURIComponent(expense.specific_year) +
                         '&day=' + encodeURIComponent(expense.specific_day);
        }

    $('update_indicator').show();
    new Ajax.Request(url, {method:'put',evalScripts:true, asynchronous:true});
    return false;
  },

  check_enter_submit: function(event) {
    if (event.keyCode == Event.KEY_RETURN) {
      var element = Event.element(event);
            // element.id is like 'element-23-more-description'.  Remove prefix and parse out the id.
            var id = parseInt(element.id.split('expense-')[1]);
            expense.update_expense_entry(id);
    }
  }

};

Object.extend(expense, Currency);

/****************************************************************/
/*  original filename invoice.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
var invoice = {

  register_on_change_handlers_for_step1: function(){
    $('invoice_type_summary_task').checked = true;
    $w('project task people detailed').each(function(type){
      $('invoice_type_summary_' + type).observe('click', invoice.on_change_type);
      });
    $$('.select_detailed_info').each(function(control) {
        control.observe('click', invoice.on_change_detailed_info_part);
      });
    $$('.select_project_checkbox').each(function(c){
      c.observe('click', invoice.on_change_project_to_invoice);
      });
    invoice.on_change_project_to_invoice();
  },

  on_change_type: function(){
    if($('invoice_type_summary_detailed').checked){
      $('detailed_config').show();
    } else {
      $('detailed_config').hide();
    }
  },

  on_change_due_date_default_value: function(dropdown){
    if($F(dropdown) == 'custom'){
      $('profile_custom_due_date_span').show();
    } else {
      $('profile_due_date_custom').value = '';
      $('profile_custom_due_date_span').hide();
    }
  },

  on_change_project_to_invoice: function(){
    $('projects_to_invoice').value = invoice.select_checked('.select_project_checkbox').map(function(c){
        return c.id.gsub(/^project-/, '').gsub(/-include$/, '');
      }).join(',');
  },

  on_change_detailed_info: function(){
    if($('detailed_config').visible()==false){
      $('detailed_info_to_include').value = '';
      return;
    }
    invoice.on_change_detailed_info_part();
  },

  on_change_detailed_info_part: function(){
    $('detailed_info_to_include').value = invoice.select_checked('.select_detailed_info').map(function(c){
        return c.name.gsub(/^include-/, '');
      }).join(',');
  },

  client_was_selected: function(){
    if(($F('clients_list') == "") || ($F('clients_list') == "new_client" && $('new_client_name').value =="")){
      alert('You must select a client');
      return false;
    }
  },

  on_change_clients_list: function(){
    if($F('clients_list') == "new_client"){
      $('new_client_control').show();
      $('select_invoice_type').hide();
      $('new_client_name').value = "Enter new client name";
      $('new_client_name').select();
      $('new_client_name').focus();
    } else {
       $('new_client_name').value='';
       $('new_client_control').hide();
       $('select_invoice_type').show();
    }
  },

  valid_send_invoice_form: function (){
    if($$('.select_recipients').pluck('checked').any(Prototype.K) == false){
      alert('You need to select at least one recipient.');
      return false;
    }
  },

  create_invoice_validations: function() {
    if($('invoice_type_summary_detailed').checked && !$$('.select_detailed_info').pluck('checked').any(Prototype.K)){
      alert('You need to select at least one field for detailed line items');
      return false;
    }
    if(!$$('.select_project_checkbox').pluck('checked').any(Prototype.K)){
      alert('You need to select at least one project');
      return false;
    }
    if($('import_hours').checked && !invoice.timeframe_valid('date-from', 'date-to')) {
      alert('You need to select a valid timeframe');
      return false;
    }
    if($('import_expenses').checked && !invoice.timeframe_valid('expense-date-from', 'expense-date-to')) {
      alert('You need to select a valid timeframe for expenses');
      return false;
    }
    return true;
  },

  timeframe_valid: function(from_field, to_field){
    return (date.is_valid_date($F(from_field)) && date.is_valid_date($F(to_field)));
  },

  check_for_valid_issue_date: function() {
    var issue_date = $F('invoice_issued_at_human_format');

    if (false == date.is_valid_date(issue_date)){
      alert('Please select a valid issue date!');
      return false;
    }
    return true;
  },

  toggle_contact_info_edit: function(){
    if($('company-contact').visible()){
      $('company-contact').toggle();
      show_big_div('company-contact-edit');
    } else {
      $('company-contact-edit').toggle();
      show_big_div('company-contact');
    }
  },

  select_checked: function(css_selector){
    return $$(css_selector).select(function(c){return c.checked;});
  },

  register_on_change_handlers_for_step2: function(){
    invoice.recompute_amounts_and_totals();
    $$("#invoice_item_rows .shareNumber input, #invoice_item_rows .price input, #invoice_item_rows .tax input, #invoice_tax").each(function(control) {
        control.observe('change', invoice.recompute_amounts_and_totals);
      });
    invoice.register_on_change_handlers_for_payment_due();
  },

  register_on_change_handlers_for_payment_due: function() {
    $('invoice_due_at_human_format').observe('change', invoice.on_change_payment_due);
    invoice.on_change_payment_due();
  },

  on_change_payment_due: function() {
    var task_value = $F('invoice_due_at_human_format');
    if(task_value == 'custom'){
      $('due_at_timeframe').show();
    } else{
      $('due_at_timeframe').hide();
    }
  },

  remove_line_item: function(i){
    //alert(i);

    svbKeepArray('delete', i)
    svbFillArray()

    $('item-row-' + i).remove();
    invoice.recompute_amounts_and_totals();
  },

  add_line_item: function(){
  
  linerNumber = 0;
  linerNumber = invoice.next_free_row_id();
  
    var html_prototype = "<tr id=\"item-row-NUMBER\">" + $('item-row-NUMBER').innerHTML + "</tr>";
    html_prototype = html_prototype.replace(/NUMBER/g, invoice.next_free_row_id());
    new Insertion.Bottom('invoice_item_rows', html_prototype);
    var new_row = $($('invoice_item_rows').lastChild);
    new_row.getElementsBySelector('.shareNumber input, .price input, .tax input').each(function(control){
        control.observe('change', invoice.recompute_amounts_and_totals);
      });
    new Effect.Highlight(new_row);
  
    svbKeepArray('add', linerNumber)
    
  },

  next_free_row_id: function(){
    var max = $$("#invoice_item_rows tr").pluck('id').map(function(e){
        return parseInt(e.gsub(/^item-row-/, '')) || -1;
      }).max();
    //zs 0 || -1 => -1 hence increasing by two
    return max + 2;
  },

  last_know_tax_value : '',

  show_tax_fields: function(){
    $('apply_tax_link').hide();
    $$('#tax_field_control, #tax_table_head, #invoice_item_rows .tax').invoke('show');
    $$('#invoice_item_rows .tax input').each(function(e) { e.value = '1'; e.checked = true;});
    $('invoice_table_footer').addClassName('tax_pad');
    $('invoice_tax').focus();
    $('invoice_tax').value = invoice.last_known_tax_value;
    this.recompute_amounts_and_totals();
  },

  do_not_apply_tax: function(){
    $('apply_tax_link').show();
    $$('#tax_field_control, #tax_table_head, #invoice_item_rows .tax').invoke('hide');
    $$('#invoice_item_rows .tax input').each(function(e) { e.value = '0'; e.checked = false;});
    $('invoice_table_footer').removeClassName('tax_pad');
    invoice.last_known_tax_value = $F('invoice_tax');
    $('invoice_tax').value = '';
    this.recompute_amounts_and_totals();
  },



  // parse_out_currency_symbol: function(){
  //   var value = $F('invoice_currency_with_symbol').match(/^.+\s\((.+)\)$/);
  //   invoice.currency_symbol = ((value && value.length == 2) ? value[1] : '$');
  // },

  recompute_amounts_and_totals: function(){

    updateShares();

    var quantities = $$("#invoice_item_rows .shareNumber input").pluck('value');
    var optionsWarrants = $$("#invoice_item_rows .optionWarrantNumber input").pluck('value');    
    
    var sharePrices = $$("#invoice_item_rows .price input").pluck('value');
    var taxed = $$("#invoice_item_rows .tax input").pluck('checked');
    var tax_multiplier = parseFloat($F('invoice_tax') || 0) / 100;

    var amount_fields = $$("#invoice_item_rows .amount");

    //svb 6.21.08
    var ownership_fields = $$("#invoice_item_rows .percentFull");
    var voter_fields = $$("#invoice_item_rows .percentVote");
    var valuation_fields = $$("#invoice_item_rows .valuation");


    var sub_total = 0;
    var tax_total = 0;
    allInvested = 0;
    valuationAmount = 0;    
    votingShares = 0;
    lineValuationAmount = 0;
    votingPercent = 0;





    for (var i = 0, len = amount_fields.length; i < len; ++i) {

    cleanIt = 0;
    if ( quantities[i] != '')
    {cleanIt=parseInt(quantities[i].replace(/,/g,""));
    quantities[i]=cleanIt;}
    
    if ( quantities[i] == ''){quantities[i]=0;}
    votingShares += quantities[i];

    cleanIt = 0;
    if ( optionsWarrants[i] != '')
    {cleanIt=parseInt(optionsWarrants[i].replace(/,/g,""));
    optionsWarrants[i]=cleanIt;}
    
    if ( optionsWarrants[i] == ''){optionsWarrants[i]=0;}
    }
   



    for (var i = 0, len = amount_fields.length; i < len; ++i) {
      var amount = (parseFloat(quantities[i]) || 0) * (parseFloat(sharePrices[i]) || 0);
      allInvested += amount;
      amount_fields[i].innerHTML = invoice.number_to_currency(amount);

    //svb 6.21.08
      getTotalShares()
      var percent = 0;
      var lineValuationAmount =0;
      lineShares = quantities[i] + optionsWarrants[i];
      if ( totalShares > 0)percent = (lineShares / totalShares)*100;
      ownership_fields[i].innerHTML =  (Math.round(10 * percent)/10)+"%"
      if ( votingShares > 0)votingPercent = ((quantities[i]) / (votingShares))*100;
      voter_fields[i].innerHTML =  (Math.round(10 * votingPercent)/10)+"%"

    //by setting TRIM='yes' you're setting a switch in number_to_currency to skip the cents used for the total only 
      Trim = 'yes';
      ary = sharePrices;
      if ( totalShares > 0 && lineShares >0 )valuationAmount = (     lineShares / (lineShares / totalShares) * parseFloat(ary.lastNonZero())  ||  0   );
      
      Trim = 'yes';
      $('valuationTotal').update(invoice.number_to_currency(valuationAmount));
      valuation_fields[i].innerHTML =  invoice.number_to_currency((Math.round(10 * valuationAmount * (percent/100))/10));
      Trim = 'no';


      //display the valuation pricing which is the last share non-zero price.
      valuationPricing = 0;
      valuationPricing = document.getElementById('valuationSharePrice')
      valuationPricing.innerHTML = money(parseFloat(ary.lastNonZero())  ||  0  );
   

      if(taxed[i]){
      tax_total += amount * tax_multiplier;
      }
      sub_total += amount;
    }



    //svb 6.20.08
    updateShares();
    $('shareTotal').update(comma(addShares));
    $('shareTotalVoting').update(comma(votingShares));
    optionShares = addShares-votingShares;
    $('shareTotalNonVoting').update(comma(optionShares));    
    
    
    
    //$('sub_total_amount').update(invoice.number_to_currency(sub_total));
    //by setting TRIM='yes' you're setting a switch in number_to_currency to skip the cents used for the total only 
    Trim = 'yes';

    $('valuationTotal').update(invoice.number_to_currency(valuationAmount));
    $('total_amount').update(invoice.number_to_currency(sub_total + tax_total));


    //svb 6.20.08
    averageCalc();
    //shut trim off so that lines items display the cents!
    Trim = 'no'
    // let the array do its work!
    svbFillArray();
    

    if($('apply_tax_link').visible()){
      $('tax_total_row').hide();
    } else {
      $('tax_total_row').show();
      $('total_tax_amount').update(invoice.number_to_currency(tax_total));
      $('tax_percentage').update('(' + parseFloat($F('invoice_tax') || 0).toFixed(2) + '%)');
    }
},

  // compute_total_amount_for_existing_record: function(){
  //   var total_amount = $$("#invoice_item_rows .amount").inject(0, function(sum, item){
  //       return sum + (invoice.parse_float_with_currencies(item.innerHTML) || 0);
  //     });
  //   $('total_amount').update(invoice.number_to_currency(total_amount));
  // },

  toggle_create_category_form: function(){
    $('add_category').toggle();
    $('add-category-button').toggleClassName('pressed');
    $('add_category_name').activate();
  },

  toggle_item_category_controls: function() {
    var args = $A(arguments), id = args.shift();
    args.each(function(control){
        $('invoice-item-category-' + id + '-' + control).toggle();
      });
  },

  toggle_item_category_editor: function(id) {
    invoice.toggle_item_category_controls(id, 'show', 'edit');
    if($('invoice-item-category-' + id + '-edit').visible()){
      $('invoice-item-category-' + id + '-edit-name').activate();
    }
  },

  destroy: function(path){
    if(confirm('Are you sure you want to delete this invoice?')){
      new Ajax.Request(path, { evalScripts:true, asynchronous:true, method:'delete'});
    }
    return false;
  },

  toggle_payment_form: function(){
    if($('send-invoice-button').hasClassName('pressed')){
      invoice.toggle_send_invoice_form();
    }
    $('payment_form').toggle();
    $('payment-button').toggleClassName('pressed');
    if($('payment_form').visible){
      var amount_field = $('payment_amount_field');
      amount_field.focus();
      amount_field.select();
    }
  },

  toggle_create_invoice_form: function(){
    $('create-invoice-form').toggle();
    $('create-invoice-button').toggleClassName('pressed');
  },

  toggle_send_invoice_form: function(){
    if($('payment-button').hasClassName('pressed')){
      invoice.toggle_payment_form();
    }
    $('send_invoice_form').toggle();
    $('send-invoice-button').toggleClassName('pressed');
  },

  toggle_dashboard_filter: function(){
    $('filter_options').toggle();
    $('filter-button').toggleClassName('pressed');
  },

  on_change_timeframe_filter: function(){
    if($F('timeframe') == 'custom'){
      $('custom_timeframe').show();
      $$('#custom_timeframe input').each(function(control){ control.disabled = false;});
    } else{
      $('custom_timeframe').hide();
      $$('#custom_timeframe input').each(function(control){ control.disabled = true;});
    }
  },

  protect_against_silly_comma_problems: ''

};

Object.extend(invoice, Currency);

/****************************************************************/
/*  original filename hours.js                        */
/****************************************************************/


/* -*- Mode:JavaScript; c-basic-offset:2; indent-tabs-mode:nil; c-indentation-style:"k&r" -*- */
var hours = {

  DECIMAL_TIME_FORMAT: 'decimal',
  HOURS_MINUTES_TIME_FORMAT: 'hours_minutes',
  time_format: 'decimal',
  negative_regexp: /(^-)|(^\()/,  // Begins with '-' or '('

  display_time: function(number) {
    if(number <= 0) return '0';
    return (hours.DECIMAL_TIME_FORMAT == hours.time_format ? number.toFixed(2) : hours.convert_decimal_to_hhmm(number));
  },

  convert_hhmm_to_decimal: function(input_value) {
    if ((input_value != null) && (input_value.indexOf) && (input_value.indexOf(':') != -1)) {
      var time = input_value.split(':');
      var negative = false;
      if(time[0].match(/^-/)) {
        negative = true;
        time[0] = time[0].sub('-', '');
      }
      var hours = (time[0] == "") ? 0 : parseFloat(time[0]);
      var minutes = parseFloat(time[1] / 60);
      input_value = (minutes + 0 + hours).toFixed(2);
      if(negative) input_value = 0 - input_value;
    }
    return input_value;
  },

  convert_decimal_to_hhmm: function(input_value) {
    var hours_and_decimal_part = input_value.toFixed(2).split('.');
    var hours                  = hours_and_decimal_part[0] || '0';
    var decimal_part           = hours_and_decimal_part[1];
    var minutes                = Math.round(parseFloat(decimal_part) * 60 / 100);

    // Add '0' to the front of single digit minutes for use in building a full time string like "7:08".
    minutes                    = minutes >= 10 ? minutes : '0' + minutes;

    return hours + ':' + minutes;
  },

  // Get the absolute value of time, removing '-', '(', and ')'
  abs_time: function(time) {
    return time.gsub(/-|\(|\)/, '');
  },

  parse_as_float: function (input_value) {
    return parseFloat((input_value.indexOf(':') != -1) ? hours.convert_hhmm_to_decimal(input_value) : input_value);
  },

  // Checks if given time is equivalent to "0:00"
  zero: function(time) {
    return time.blank() || '0' == time || '0:00' == time || 0 == time;
  }
};


/****************************************************************/
/*  original filename date.js                        */
/****************************************************************/


var date = {
  
	_date_regexp : /^(\d{1,2})(\/|\.|\-)(\d{1,2})(?:\/|\.|\-)(\d{4})$/,
	date_seperator_regexp : /\/|-|\\|\./,

  is_valid_date: function(input_date){
		if(date._date_regexp.test(input_date)) {
			var date_parts = input_date.split(date.date_seperator_regexp);
			var year			 = date_parts[2];
			var month 		 = date_parts[0];
			var day        = date_parts[1];
			var check_date = new Date(year, month - 1, day);
	    return ((day==check_date.getDate()) && (month==check_date.getMonth() + 1) && (year==check_date.getFullYear()));
		} else {
			return false;
		}
  }

};
/****************************************************************/
/*  original filename form_protector.js                        */
/****************************************************************/


// Adapted from: http://www.phpriot.com/articles/reminding-users-to-submit-forms
var FormProtector = Class.create({

  form    : null,     // the form being protected
  alert   : false,    // whether or not to show the confirm box

  // the message to display in confirm box
  message : 'Please remember to submit your form',

  initialize : function(form) {
    this.form = $(form);
    this.form.observe('submit', this._onFormSubmit.bindAsEventListener(this));

    this.form.getElements().each(function(element) {
      element.observe('change', function() {
        this.alert = true;
      }.bindAsEventListener(this));
    }.bind(this));

    Event.observe(window, 'beforeunload', this._onBeforeUnload.bindAsEventListener(this));
  },

  setMessage : function(str) {
    this.message = str;
  },

  _onFormSubmit : function(e) {
    this.alert = false;
  },

  _onBeforeUnload : function(e) {
    if (this.alert) e.returnValue = this.message;
  }
});