/*  Prototype JavaScript framework, version 1.6.0.3
 *  (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/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.3',

  Browser: {
    IE:     !!(window.attachEvent &&
      navigator.userAgent.indexOf('Opera') === -1),
    Opera:  navigator.userAgent.indexOf('Opera') > -1,
    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,
    SelectorsAPI: !!document.querySelector,
    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;

var Abstract = { };

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;
  }
};

/* Based on Alex Arnell's inheritance implementation. */
var Class = (function() {
  function create() {
    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;
  }

  function addMethods(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 = (function(m) {
          return function() { return ancestor[m].apply(this, arguments); };
        })(property).wrap(method);

        value.valueOf = method.valueOf.bind(method);
        value.toString = method.toString.bind(method);
      }
      this.prototype[property] = value;
    }

    return this;
  }

  return {
    create: create,
    Methods: {
      addMethods: addMethods
    }
  };
})();
(function() {
  function extend(destination, source) {
    for (var property in source)
      destination[property] = source[property];
    return destination;
  }

  function inspect(object) {
    try {
      if (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;
    }
  }

  function toJSON(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 (isElement(object)) return;

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

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

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

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

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

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

  function clone(object) {
    return extend({ }, object);
  }

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

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

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

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

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

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

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

  extend(Object, {
    extend:        extend,
    inspect:       inspect,
    toJSON:        toJSON,
    toQueryString: toQueryString,
    toHTML:        toHTML,
    keys:          keys,
    values:        values,
    clone:         clone,
    isElement:     isElement,
    isArray:       isArray,
    isHash:        isHash,
    isFunction:    isFunction,
    isString:      isString,
    isNumber:      isNumber,
    isUndefined:   isUndefined
  });
})();
Object.extend(Function.prototype, (function() {
  var slice = Array.prototype.slice;

  function update(array, args) {
    var arrayLength = array.length, length = args.length;
    while (length--) array[arrayLength + length] = args[length];
    return array;
  }

  function merge(array, args) {
    array = slice.call(array, 0);
    return update(array, args);
  }

  function argumentNames() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1]
      .replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '')
      .replace(/\s+/g, '').split(',');
    return names.length == 1 && !names[0] ? [] : names;
  }

  function bind(context) {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = slice.call(arguments, 1);
    return function() {
      var a = merge(args, arguments);
      return __method.apply(context, a);
    }
  }

  function bindAsEventListener(context) {
    var __method = this, args = slice.call(arguments, 1);
    return function(event) {
      var a = update([event || window.event], args);
      return __method.apply(context, a);
    }
  }

  function curry() {
    if (!arguments.length) return this;
    var __method = this, args = slice.call(arguments, 0);
    return function() {
      var a = merge(args, arguments);
      return __method.apply(this, a);
    }
  }

  function delay(timeout) {
    var __method = this, args = slice.call(arguments, 1);
    timeout = timeout * 1000
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  }

  function defer() {
    var args = update([0.01], arguments);
    return this.delay.apply(this, args);
  }

  function wrap(wrapper) {
    var __method = this;
    return function() {
      var a = update([__method.bind(this)], arguments);
      return wrapper.apply(this, a);
    }
  }

  function methodize() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      var a = update([this], arguments);
      return __method.apply(null, a);
    };
  }

  return {
    argumentNames:       argumentNames,
    bind:                bind,
    bindAsEventListener: bindAsEventListener,
    curry:               curry,
    delay:               delay,
    defer:               defer,
    wrap:                wrap,
    methodize:           methodize
  }
})());

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"';
};
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, (function() {

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

  function gsub(pattern, replacement) {
    var result = '', source = this, match;
    replacement = 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;
  }

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

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

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

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

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

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

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

  function extractScripts() {
    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];
    });
  }

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

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

  function unescapeHTML() {
    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) : '';
  }

  function toQueryParams(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;
    });
  }

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

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

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

  function camelize() {
    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;
  }

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

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

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

  function inspect(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, '\\\'') + "'";
  }

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

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

  function isJSON() {
    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);
  }

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

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

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

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

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

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

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

  return {
    gsub:           gsub,
    sub:            sub,
    scan:           scan,
    truncate:       truncate,
    strip:          strip,
    stripTags:      stripTags,
    stripScripts:   stripScripts,
    extractScripts: extractScripts,
    evalScripts:    evalScripts,
    escapeHTML:     escapeHTML,
    unescapeHTML:   unescapeHTML,
    toQueryParams:  toQueryParams,
    parseQuery:     toQueryParams,
    toArray:        toArray,
    succ:           succ,
    times:          times,
    camelize:       camelize,
    capitalize:     capitalize,
    underscore:     underscore,
    dasherize:      dasherize,
    inspect:        inspect,
    toJSON:         toJSON,
    unfilterJSON:   unfilterJSON,
    isJSON:         isJSON,
    evalJSON:       evalJSON,
    include:        include,
    startsWith:     startsWith,
    endsWith:       endsWith,
    empty:          empty,
    blank:          blank,
    interpolate:    interpolate
  };
})());

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.stripTags().replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

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

String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.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 = (function() {
  function each(iterator, context) {
    var index = 0;
    try {
      this._each(function(value) {
        iterator.call(context, value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  }

  function eachSlice(number, iterator, context) {
    var index = -number, slices = [], array = this.toArray();
    if (number < 1) return array;
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  }

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

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

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

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

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

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

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

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

  function include(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;
  }

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

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

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

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

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

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

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

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

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

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

  function zip() {
    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));
    });
  }

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

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

  return {
    each:       each,
    eachSlice:  eachSlice,
    all:        all,
    every:      all,
    any:        any,
    some:       any,
    collect:    collect,
    map:        collect,
    detect:     detect,
    findAll:    findAll,
    select:     findAll,
    filter:     findAll,
    grep:       grep,
    include:    include,
    member:     include,
    inGroupsOf: inGroupsOf,
    inject:     inject,
    invoke:     invoke,
    max:        max,
    min:        min,
    partition:  partition,
    pluck:      pluck,
    reject:     reject,
    sortBy:     sortBy,
    toArray:    toArray,
    entries:    toArray,
    zip:        zip,
    size:       size,
    inspect:    inspect,
    find:       detect
  };
})();
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 [];
    // In Safari, only use the `toArray` method if it's not a NodeList.
    // A NodeList is a function, has an function `item` property, and a numeric
    // `length` property. Adapted from Google Doctype.
    if (!(typeof iterable === 'function' && typeof iterable.length ===
        'number' && typeof iterable.item === 'function') && iterable.toArray)
      return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

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

Array.from = $A;

(function() {
  var arrayProto = Array.prototype,
      slice = arrayProto.slice,
      _each = arrayProto.forEach; // use native browser JS 1.6 implementation if available

  function each(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  }
  if (!_each) _each = each;

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

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

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

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

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

  function without() {
    var values = slice.call(arguments, 0);
    return this.select(function(value) {
      return !values.include(value);
    });
  }

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

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

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

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

  function clone() {
    return slice.call(this, 0);
  }

  function size() {
    return this.length;
  }

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

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

  function indexOf(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;
  }

  function lastIndexOf(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;
  }

  function concat() {
    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(arrayProto, Enumerable);

  if (!arrayProto._reverse)
    arrayProto._reverse = arrayProto.reverse;

  Object.extend(arrayProto, {
    _each:     _each,
    clear:     clear,
    first:     first,
    last:      last,
    compact:   compact,
    flatten:   flatten,
    without:   without,
    reverse:   reverse,
    reduce:    reduce,
    uniq:      uniq,
    intersect: intersect,
    clone:     clone,
    toArray:   clone,
    size:      size,
    inspect:   inspect,
    toJSON:    toJSON
  });

  // use native browser JS 1.6 implementation if available
  if (!'indexOf'     in arrayProto) arrayProto.indexOf     = indexOf;
  if (!'lastIndexOf' in arrayProto) arrayProto.lastIndexOf = lastIndexOf;
  if (!'concat'      in arrayProto) arrayProto.concat      = concat;
})();
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {
  function initialize(object) {
    this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
  }

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

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

  function get(key) {
    // simulating poorly supported hasOwnProperty
    if (this._object[key] !== Object.prototype[key])
      return this._object[key];
  }

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

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

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

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

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

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

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

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

  function toQueryString() {
    return this.inject([], function(results, pair) {
      var key = encodeURIComponent(pair.key), values = pair.value;

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

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

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

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

  return {
    initialize:             initialize,
    _each:                  _each,
    set:                    set,
    get:                    get,
    unset:                  unset,
    toObject:               toObject,
    toTemplateReplacements: toObject,
    keys:                   keys,
    values:                 values,
    index:                  index,
    merge:                  merge,
    update:                 update,
    toQueryString:          toQueryString,
    inspect:                inspect,
    toJSON:                 toJSON,
    clone:                  clone
  };
})());

Hash.from = $H;

Object.extend(Number.prototype, (function() {
  function toColorPart() {
    return this.toPaddedString(2, 16);
  }

  function succ() {
    return this + 1;
  }

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

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

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

  function abs() {
    return Math.abs(this);
  }

  function round() {
    return Math.round(this);
  }

  function ceil() {
    return Math.ceil(this);
  }

  function floor() {
    return Math.floor(this);
  }

  return {
    toColorPart:    toColorPart,
    succ:           succ,
    times:          times,
    toPaddedString: toPaddedString,
    toJSON:         toJSON,
    abs:            abs,
    round:          round,
    ceil:           ceil,
    floor:          floor
  };
})());
function $R(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
}

var ObjectRange = Class.create(Enumerable, (function() {
  function initialize(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  }

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

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

  return {
    initialize: initialize,
    _each:      _each,
    include:    include
  };
})());

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 || { });
  if (element) this.Element.prototype = element.prototype;
}).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 = $(element);
    element.style.display = 'none';
    return element;
  },

  show: function(element) {
    element = $(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(element, 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);

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

    if (ancestor.contains)
      return ancestor.contains(element) && ancestor !== element;

    while (element = element.parentNode)
      if (element == ancestor) 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 || value == 'auto') {
      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 (Prototype.Browser.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.toUpperCase() == '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 element;
    // 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 element;
    // 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 && (element.tagName.toUpperCase() == '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);
      // IE throws an error if element is not in document
      try { element.offsetParent }
      catch(e) { return $(document.body) }
      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);
        try { element.offsetParent }
        catch(e) { return Element._returnOffset(0,0) }
        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.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
    function(proceed, element) {
      try { element.offsetParent }
      catch(e) { return Element._returnOffset(0,0) }
      return proceed(element);
    }
  );

  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 frameBorder').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.toUpperCase() == '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.toUpperCase(), 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 = { }, B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      if (B.WebKit && !document.evaluate) {
        // Safari <3.0 needs self.innerWidth/Height
        dimensions[d] = self['inner' + D];
      } else if (B.Opera && parseFloat(window.opera.version()) < 9.5) {
        // Opera <9.5 needs document.body.clientWidth/Height
        dimensions[d] = document.body['client' + D]
      } else {
        dimensions[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();

    if (this.shouldUseSelectorsAPI()) {
      this.mode = 'selectorsAPI';
    } else if (this.shouldUseXPath()) {
      this.mode = 'xpath';
      this.compileXPathMatcher();
    } else {
      this.mode = "normal";
      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(e))
      return false;

    return true;
  },

  shouldUseSelectorsAPI: function() {
    if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

    if (Selector.CASE_INSENSITIVE_CLASS_NAMES) return false;

    if (!Selector._div) Selector._div = new Element('div');

    // Make sure the browser treats the selector as valid. Test on an
    // isolated element to minimize cost of this check.
    try {
      Selector._div.querySelector(this.expression);
    } catch(e) {
      return false;
    }

    return true;
  },

  compileMatcher: function() {
    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;
    var e = this.expression, results;

    switch (this.mode) {
      case 'selectorsAPI':
        // querySelectorAll queries document-wide, then filters to descendants
        // of the context element. That's not what we want.
        // Add an explicit context to the selector if necessary.
        if (root !== document) {
          var oldId = root.id, id = $(root).identify();
          e = "#" + id + " " + e;
        }

        results = $A(root.querySelectorAll(e)).map(Element.extend);
        root.id = oldId;

        return results;
      case 'xpath':
        return document._getElementsByXPath(this.xpath, root);
      default:
       return this.matcher(root);
    }
  },

  match: function(element) {
    if (this.expression.include(',')) {
      // If the expression includes a comma, it might be a union of several
      // selectors. Split and check each one.
      var expressions = Selector.split(this.expression);
      if (expressions.length > 1) {
        return expressions.any( function(expression) {
          return new Selector(expression).match(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() + ">";
  }
});

if (Prototype.BrowserFeatures.SelectorsAPI &&
 document.compatMode === 'BackCompat') {
  // Versions of Safari 3 before 3.1.2 treat class names case-insensitively in
  // quirks mode. If we detect this behavior, we should use a different
  // approach.
  Selector.CASE_INSENSITIVE_CLASS_NAMES = (function(){
    var div = document.createElement('div'),
     span = document.createElement('span');

    div.id = "prototype_test_id";
    span.className = 'Test';
    div.appendChild(span);
    var isIgnored = (div.querySelector('#prototype_test_id .test') !== null);
    div = span = null;
    return isIgnored;
  })();
}

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)]",
      'checked':     "[@checked]",
      'disabled':    "[(@disabled) and (@type!='hidden')]",
      'enabled':     "[not(@disabled) and (@type!='hidden')]",
      '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: /^\[((?:[\w]+:)?[\w]+)\]/,
    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) 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 && (!node.type || node.type !== 'hidden'))
          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 == v || nv && nv.startsWith(v); },
    '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
    '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
    '$=': 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 != 'file' && (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.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, value) {
    if (Object.isUndefined(value))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, currentValue, single = !Object.isArray(value);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        currentValue = this.optionValue(opt);
        if (single) {
          if (currentValue == value) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = value.include(currentValue);
      }
    }
  },

  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);
  }
});
(function() {
  var 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: {}
  };

  var _isButton;
  if (Prototype.Browser.IE) {
    // IE doesn't map left/right/middle the same way.
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    _isButton = function(event, code) {
      return event.button === buttonMap[code];
    };
  } else if (Prototype.Browser.WebKit) {
    // In Safari we have to account for when the user holds down
    // the "meta" key.
    _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);
    };
  }

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

  function element(event) {
    event = Event.extend(event);

    var node = event.target, type = event.type,
     currentTarget = event.currentTarget;

    if (currentTarget && currentTarget.tagName) {
      // Firefox screws up the "click" event when moving between radio buttons
      // via arrow keys. It also screws up the "load" and "error" events on images,
      // reporting the document as the target instead of the original image.
      if (type === 'load' || type === 'error' ||
        (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
          && currentTarget.type === 'radio'))
            node = currentTarget;
    }

    // Fix a Safari bug where a text node gets passed as the target of an
    // anchor click rather than the anchor itself.
    if (node.nodeType == Node.TEXT_NODE)
      node = node.parentNode;

    return Element.extend(node);
  }

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

  function pointer(event) {
    var docElement = document.documentElement,
     body = document.body || { scrollLeft: 0, scrollTop: 0 };
    return {
      x: event.pageX || (event.clientX +
        (docElement.scrollLeft || body.scrollLeft) -
        (docElement.clientLeft || 0)),
      y: event.pageY || (event.clientY +
        (docElement.scrollTop || body.scrollTop) -
        (docElement.clientTop || 0))
    };
  }

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

  function stop(event) {
    Event.extend(event);
    event.preventDefault();
    event.stopPropagation();

    // Set a "stopped" property so that a custom event can be inspected
    // after the fact to determine whether or not it was stopped.
    event.stopped = true;
  }

  Event.Methods = {
    isLeftClick: isLeftClick,
    isMiddleClick: isMiddleClick,
    isRightClick: isRightClick,

    element: element,
    findElement: findElement,

    pointer: pointer,
    pointerX: pointerX,
    pointerY: pointerY,

    stop: stop
  };


  // Compile the list of methods that get extended onto Events.
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    function _relatedTarget(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);
    }

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

    // IE's method for extending events.
    Event.extend = 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: _relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };
  } else {
    Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
    Object.extend(Event.prototype, methods);
    Event.extend = Prototype.K;
  }

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

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

  function _getCacheForID(id) {
    return Event.cache[id] = Event.cache[id] || { };
  }

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

  function _createResponder(element, eventName, handler) {
    var id = _getEventID(element), r = _getRespondersForEvent(id, eventName);

    // Work around the issue that permits a handler to be attached more than
    // once to the same element & event type.
    if (r.pluck('handler').include(handler)) return false;

    var responder = function(event) {
      if (!Event || !Event.extend ||
      // If it's a custom event, but not the _correct_ custom event, ignore it.
       (!Object.isUndefined(event.eventName) && event.eventName !== eventName))
        return false;

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

    responder.handler = handler;
    r.push(responder);
    return responder;
  }

  function _findResponder(id, eventName, handler) {
    var r = _getRespondersForEvent(id, eventName);
    return r.find(function(responder) {
      return responder.handler === handler;
    });
  }

  function _destroyResponder(id, eventName, handler) {
    var c = _getCacheForID(id);
    if (Object.isUndefined(c[eventName])) return false;
    c[eventName] = c[eventName].without(_findResponder(id, eventName, handler));
  }

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

  // Internet Explorer needs to remove event handlers on page unload
  // in order to avoid memory leaks.
  if (Prototype.Browser.IE)
    window.attachEvent('onunload', _destroyCache);

  // Safari needs a dummy event handler on page unload so that it won't
  // use its bfcache. Safari <= 3.1 has an issue with restoring the "document"
  // object when page is returned to via the back button using its bfcache.
  if (Prototype.Browser.WebKit)
    window.addEventListener('unload', Prototype.emptyFunction, false);


  function observe(element, eventName, handler) {
    element = $(element);
    var name = _getDOMEventName(eventName),
     responder = _createResponder(element, eventName, handler);

    if (!responder) return element;

    if (element.addEventListener)
      element.addEventListener(name, responder, false);
    else
      element.attachEvent("on" + name, responder);

    return element;
  }

  function stopObserving(element, eventName, handler) {
    element = $(element);
    var id = _getEventID(element), name = _getDOMEventName(eventName);

    if (eventName && !handler) {
      // If an event name is passed without a handler, we stop observing all
      // handlers of that type.
      _getRespondersForEvent(id, eventName).each(function(r) {
        element.stopObserving(eventName, r.handler);
      });
      return element;
    } else if (!eventName) {
      // If both the event name and the handler are omitted, we stop observing
      // _all_ handlers on the element.
      Object.keys(_getCacheForID(id)).each(function(eventName) {
        element.stopObserving(eventName);
      });
      return element;
    }

    var responder = _findResponder(id, eventName, handler);
    if (!responder) return element;

    if (element.removeEventListener)
      element.removeEventListener(name, responder, false);
    else
      element.detachEvent('on' + name, responder);

    _destroyResponder(id, eventName, handler);

    return element;
  }

  function fire(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);

  Object.extend(Event, {
    fire:          fire,
    observe:       observe,
    stopObserving: stopObserving
  });

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

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

  // Export to the global scope.
  if (window.Event) Object.extend(window.Event, Event)
  else window.Event = Event;
})();

(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;
  }

  function _webkitContentLoadedCheck() {
    var s = document.readyState;
    if (s === "loaded" || s === "complete")
      _fireContentLoadedEvent();
  }

  function _IEContentLoadedCheck() {
    if (this.readyState == "complete") {
      this.onreadystatechange = null;
      _fireContentLoadedEvent();
    }
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      _timer = window.setInterval(_webkitContentLoadedCheck, 0);
      Event.observe(window, "load", _fireContentLoadedEvent);
    } else {
      document.addEventListener("DOMContentLoaded",
        _fireContentLoadedEvent, false);
    }
  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = _IEContentLoadedCheck;
  }
})();

/*------------------------------- 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();

var Scriptaculous={Version:"1.8.1",require:function(A){document.write('<script type="text/javascript" src="'+A+'"><\/script>')},REQUIRED_PROTOTYPE:"1.6.0.2",load:function(){function A(B){var C=B.replace(/_.*|\./g,"");C=parseInt(C+"0".times(4-C.length));return B.indexOf("_")>-1?C-1:C}if((typeof Prototype=="undefined")||(typeof Element=="undefined")||(typeof Element.Methods=="undefined")||(A(Prototype.Version)<A(Scriptaculous.REQUIRED_PROTOTYPE))){throw ("script.aculo.us requires the Prototype JavaScript framework >= "+Scriptaculous.REQUIRED_PROTOTYPE)}}};Scriptaculous.load();String.prototype.parseColor=function(){var A="#";if(this.slice(0,4)=="rgb("){var C=this.slice(4,this.length-1).split(",");var B=0;do{A+=parseInt(C[B]).toColorPart()}while(++B<3)}else{if(this.slice(0,1)=="#"){if(this.length==4){for(var B=1;B<4;B++){A+=(this.charAt(B)+this.charAt(B)).toLowerCase()}}if(this.length==7){A=this.toLowerCase()}}}return(A.length==7?A:(arguments[0]||this))};Element.collectTextNodes=function(A){return $A($(A).childNodes).collect(function(B){return(B.nodeType==3?B.nodeValue:(B.hasChildNodes()?Element.collectTextNodes(B):""))}).flatten().join("")};Element.collectTextNodesIgnoreClass=function(A,B){return $A($(A).childNodes).collect(function(C){return(C.nodeType==3?C.nodeValue:((C.hasChildNodes()&&!Element.hasClassName(C,B))?Element.collectTextNodesIgnoreClass(C,B):""))}).flatten().join("")};Element.setContentZoom=function(A,B){A=$(A);A.setStyle({fontSize:(B/100)+"em"});if(Prototype.Browser.WebKit){window.scrollBy(0,0)}return A};Element.getInlineOpacity=function(A){return $(A).style.opacity||""};Element.forceRerendering=function(A){try{A=$(A);var C=document.createTextNode(" ");A.appendChild(C);A.removeChild(C)}catch(B){}};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(A){return(-Math.cos(A*Math.PI)/2)+0.5},reverse:function(A){return 1-A},flicker:function(A){var A=((-Math.cos(A*Math.PI)/4)+0.75)+Math.random()/4;return A>1?1:A},wobble:function(A){return(-Math.cos(A*Math.PI*(9*A))/2)+0.5},pulse:function(B,A){return(-Math.cos((B*((A||5)-0.5)*2)*Math.PI)/2)+0.5},spring:function(A){return 1-(Math.cos(A*4.5*Math.PI)*Math.exp(-A*6))},none:function(A){return 0},full:function(A){return 1}},DefaultOptions:{duration:1,fps:100,sync:false,from:0,to:1,delay:0,queue:"parallel"},tagifyText:function(A){var B="position:relative";if(Prototype.Browser.IE){B+=";zoom:1"}A=$(A);$A(A.childNodes).each(function(C){if(C.nodeType==3){C.nodeValue.toArray().each(function(D){A.insertBefore(new Element("span",{style:B}).update(D==" "?String.fromCharCode(160):D),C)});Element.remove(C)}})},multiple:function(B,C){var E;if(((typeof B=="object")||Object.isFunction(B))&&(B.length)){E=B}else{E=$(B).childNodes}var A=Object.extend({speed:0.1,delay:0},arguments[2]||{});var D=A.delay;$A(E).each(function(G,F){new C(G,Object.extend(A,{delay:F*A.speed+D}))})},PAIRS:{slide:["SlideDown","SlideUp"],blind:["BlindDown","BlindUp"],appear:["Appear","Fade"]},toggle:function(B,C){B=$(B);C=(C||"appear").toLowerCase();var A=Object.extend({queue:{position:"end",scope:(B.id||"global"),limit:1}},arguments[2]||{});Effect[B.visible()?Effect.PAIRS[C][1]:Effect.PAIRS[C][0]](B,A)}};Effect.DefaultOptions.transition=Effect.Transitions.sinoidal;Effect.ScopedQueue=Class.create(Enumerable,{initialize:function(){this.effects=[];this.interval=null},_each:function(A){this.effects._each(A)},add:function(B){var C=new Date().getTime();var A=Object.isString(B.options.queue)?B.options.queue:B.options.queue.position;switch(A){case"front":this.effects.findAll(function(D){return D.state=="idle"}).each(function(D){D.startOn+=B.finishOn;D.finishOn+=B.finishOn});break;case"with-last":C=this.effects.pluck("startOn").max()||C;break;case"end":C=this.effects.pluck("finishOn").max()||C;break}B.startOn+=C;B.finishOn+=C;if(!B.options.queue.limit||(this.effects.length<B.options.queue.limit)){this.effects.push(B)}if(!this.interval){this.interval=setInterval(this.loop.bind(this),15)}},remove:function(A){this.effects=this.effects.reject(function(B){return B==A});if(this.effects.length==0){clearInterval(this.interval);this.interval=null}},loop:function(){var C=new Date().getTime();for(var B=0,A=this.effects.length;B<A;B++){this.effects[B]&&this.effects[B].loop(C)}}});Effect.Queues={instances:$H(),get:function(A){if(!Object.isString(A)){return A}return this.instances.get(A)||this.instances.set(A,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(C){if(C>=this.startOn){if(C>=this.finishOn){this.render(1);this.cancel();this.event("beforeFinish");if(this.finish){this.finish()}this.event("afterFinish");return }var B=(C-this.startOn)/this.totalTime,A=(B*this.totalFrames).round();if(A>this.currentFrame){this.render(B);this.currentFrame=A}}},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(A){if(this.options[A+"Internal"]){this.options[A+"Internal"](this)}if(this.options[A]){this.options[A](this)}},inspect:function(){var A=$H();for(property in this){if(!Object.isFunction(this[property])){A.set(property,this[property])}}return"#<Effect:"+A.inspect()+",options:"+$H(this.options).inspect()+">"}});Effect.Parallel=Class.create(Effect.Base,{initialize:function(A){this.effects=A||[];this.start(arguments[1])},update:function(A){this.effects.invoke("render",A)},finish:function(A){this.effects.each(function(B){B.render(1);B.cancel();B.event("beforeFinish");if(B.finish){B.finish(A)}B.event("afterFinish")})}});Effect.Tween=Class.create(Effect.Base,{initialize:function(C,F,E){C=Object.isString(C)?$(C):C;var B=$A(arguments),D=B.last(),A=B.length==5?B[3]:null;this.method=Object.isFunction(D)?D.bind(C):Object.isFunction(C[D])?C[D].bind(C):function(G){C[D]=G};this.start(Object.extend({from:F,to:E},A||{}))},update:function(A){this.method(A)}});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(B){this.element=$(B);if(!this.element){throw (Effect._elementDoesNotExistError)}if(Prototype.Browser.IE&&(!this.element.currentStyle.hasLayout)){this.element.setStyle({zoom:1})}var A=Object.extend({from:this.element.getOpacity()||0,to:1},arguments[1]||{});this.start(A)},update:function(A){this.element.setOpacity(A)}});Effect.Move=Class.create(Effect.Base,{initialize:function(B){this.element=$(B);if(!this.element){throw (Effect._elementDoesNotExistError)}var A=Object.extend({x:0,y:0,mode:"relative"},arguments[1]||{});this.start(A)},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(A){this.element.setStyle({left:(this.options.x*A+this.originalLeft).round()+"px",top:(this.options.y*A+this.originalTop).round()+"px"})}});Effect.MoveBy=function(B,A,C){return new Effect.Move(B,Object.extend({x:C,y:A},arguments[3]||{}))};Effect.Scale=Class.create(Effect.Base,{initialize:function(B,C){this.element=$(B);if(!this.element){throw (Effect._elementDoesNotExistError)}var A=Object.extend({scaleX:true,scaleY:true,scaleContent:true,scaleFromCenter:false,scaleMode:"box",scaleFrom:100,scaleTo:C},arguments[2]||{});this.start(A)},setup:function(){this.restoreAfterFinish=this.options.restoreAfterFinish||false;this.elementPositioning=this.element.getStyle("position");this.originalStyle={};["top","left","width","height","fontSize"].each(function(B){this.originalStyle[B]=this.element.style[B]}.bind(this));this.originalTop=this.element.offsetTop;this.originalLeft=this.element.offsetLeft;var A=this.element.getStyle("font-size")||"100%";["em","px","%","pt"].each(function(B){if(A.indexOf(B)>0){this.fontSize=parseFloat(A);this.fontSizeType=B}}.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(A){var B=(this.options.scaleFrom/100)+(this.factor*A);if(this.options.scaleContent&&this.fontSize){this.element.setStyle({fontSize:this.fontSize*B+this.fontSizeType})}this.setDimensions(this.dims[0]*B,this.dims[1]*B)},finish:function(A){if(this.restoreAfterFinish){this.element.setStyle(this.originalStyle)}},setDimensions:function(A,D){var E={};if(this.options.scaleX){E.width=D.round()+"px"}if(this.options.scaleY){E.height=A.round()+"px"}if(this.options.scaleFromCenter){var C=(A-this.dims[0])/2;var B=(D-this.dims[1])/2;if(this.elementPositioning=="absolute"){if(this.options.scaleY){E.top=this.originalTop-C+"px"}if(this.options.scaleX){E.left=this.originalLeft-B+"px"}}else{if(this.options.scaleY){E.top=-C+"px"}if(this.options.scaleX){E.left=-B+"px"}}}this.element.setStyle(E)}});Effect.Highlight=Class.create(Effect.Base,{initialize:function(B){this.element=$(B);if(!this.element){throw (Effect._elementDoesNotExistError)}var A=Object.extend({startcolor:"#ffff99"},arguments[1]||{});this.start(A)},setup:function(){if(this.element.getStyle("display")=="none"){this.cancel();return }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")}this._base=$R(0,2).map(function(A){return parseInt(this.options.startcolor.slice(A*2+1,A*2+3),16)}.bind(this));this._delta=$R(0,2).map(function(A){return parseInt(this.options.endcolor.slice(A*2+1,A*2+3),16)-this._base[A]}.bind(this))},update:function(A){this.element.setStyle({backgroundColor:$R(0,2).inject("#",function(B,C,D){return B+((this._base[D]+(this._delta[D]*A)).round().toColorPart())}.bind(this))})},finish:function(){this.element.setStyle(Object.extend(this.oldStyle,{backgroundColor:this.options.restorecolor}))}});Effect.ScrollTo=function(C){var B=arguments[1]||{},A=document.viewport.getScrollOffsets(),D=$(C).cumulativeOffset();if(B.offset){D[1]+=B.offset}return new Effect.Tween(null,A.top,D[1],B,function(E){scrollTo(A.left,E.round())})};Effect.Fade=function(C){C=$(C);var A=C.getInlineOpacity();var B=Object.extend({from:C.getOpacity()||1,to:0,afterFinishInternal:function(D){if(D.options.to!=0){return }D.element.hide().setStyle({opacity:A})}},arguments[1]||{});return new Effect.Opacity(C,B)};Effect.Appear=function(B){B=$(B);var A=Object.extend({from:(B.getStyle("display")=="none"?0:B.getOpacity()||0),to:1,afterFinishInternal:function(C){C.element.forceRerendering()},beforeSetup:function(C){C.element.setOpacity(C.options.from).show()}},arguments[1]||{});return new Effect.Opacity(B,A)};Effect.Puff=function(B){B=$(B);var A={opacity:B.getInlineOpacity(),position:B.getStyle("position"),top:B.style.top,left:B.style.left,width:B.style.width,height:B.style.height};return new Effect.Parallel([new Effect.Scale(B,200,{sync:true,scaleFromCenter:true,scaleContent:true,restoreAfterFinish:true}),new Effect.Opacity(B,{sync:true,to:0})],Object.extend({duration:1,beforeSetupInternal:function(C){Position.absolutize(C.effects[0].element)},afterFinishInternal:function(C){C.effects[0].element.hide().setStyle(A)}},arguments[1]||{}))};Effect.BlindUp=function(A){A=$(A);A.makeClipping();return new Effect.Scale(A,0,Object.extend({scaleContent:false,scaleX:false,restoreAfterFinish:true,afterFinishInternal:function(B){B.element.hide().undoClipping()}},arguments[1]||{}))};Effect.BlindDown=function(B){B=$(B);var A=B.getDimensions();return new Effect.Scale(B,100,Object.extend({scaleContent:false,scaleX:false,scaleFrom:0,scaleMode:{originalHeight:A.height,originalWidth:A.width},restoreAfterFinish:true,afterSetup:function(C){C.element.makeClipping().setStyle({height:"0px"}).show()},afterFinishInternal:function(C){C.element.undoClipping()}},arguments[1]||{}))};Effect.SwitchOff=function(B){B=$(B);var A=B.getInlineOpacity();return new Effect.Appear(B,Object.extend({duration:0.4,from:0,transition:Effect.Transitions.flicker,afterFinishInternal:function(C){new Effect.Scale(C.element,1,{duration:0.3,scaleFromCenter:true,scaleX:false,scaleContent:false,restoreAfterFinish:true,beforeSetup:function(D){D.element.makePositioned().makeClipping()},afterFinishInternal:function(D){D.element.hide().undoClipping().undoPositioned().setStyle({opacity:A})}})}},arguments[1]||{}))};Effect.DropOut=function(B){B=$(B);var A={top:B.getStyle("top"),left:B.getStyle("left"),opacity:B.getInlineOpacity()};return new Effect.Parallel([new Effect.Move(B,{x:0,y:100,sync:true}),new Effect.Opacity(B,{sync:true,to:0})],Object.extend({duration:0.5,beforeSetup:function(C){C.effects[0].element.makePositioned()},afterFinishInternal:function(C){C.effects[0].element.hide().undoPositioned().setStyle(A)}},arguments[1]||{}))};Effect.Shake=function(D){D=$(D);var B=Object.extend({distance:20,duration:0.5},arguments[1]||{});var E=parseFloat(B.distance);var C=parseFloat(B.duration)/10;var A={top:D.getStyle("top"),left:D.getStyle("left")};return new Effect.Move(D,{x:E,y:0,duration:C,afterFinishInternal:function(F){new Effect.Move(F.element,{x:-E*2,y:0,duration:C*2,afterFinishInternal:function(G){new Effect.Move(G.element,{x:E*2,y:0,duration:C*2,afterFinishInternal:function(H){new Effect.Move(H.element,{x:-E*2,y:0,duration:C*2,afterFinishInternal:function(I){new Effect.Move(I.element,{x:E*2,y:0,duration:C*2,afterFinishInternal:function(J){new Effect.Move(J.element,{x:-E,y:0,duration:C,afterFinishInternal:function(K){K.element.undoPositioned().setStyle(A)}})}})}})}})}})}})};Effect.SlideDown=function(C){C=$(C).cleanWhitespace();var A=C.down().getStyle("bottom");var B=C.getDimensions();return new Effect.Scale(C,100,Object.extend({scaleContent:false,scaleX:false,scaleFrom:window.opera?0:1,scaleMode:{originalHeight:B.height,originalWidth:B.width},restoreAfterFinish:true,afterSetup:function(D){D.element.makePositioned();D.element.down().makePositioned();if(window.opera){D.element.setStyle({top:""})}D.element.makeClipping().setStyle({height:"0px"}).show()},afterUpdateInternal:function(D){D.element.down().setStyle({bottom:(D.dims[0]-D.element.clientHeight)+"px"})},afterFinishInternal:function(D){D.element.undoClipping().undoPositioned();D.element.down().undoPositioned().setStyle({bottom:A})}},arguments[1]||{}))};Effect.SlideUp=function(C){C=$(C).cleanWhitespace();var A=C.down().getStyle("bottom");var B=C.getDimensions();return new Effect.Scale(C,window.opera?0:1,Object.extend({scaleContent:false,scaleX:false,scaleMode:"box",scaleFrom:100,scaleMode:{originalHeight:B.height,originalWidth:B.width},restoreAfterFinish:true,afterSetup:function(D){D.element.makePositioned();D.element.down().makePositioned();if(window.opera){D.element.setStyle({top:""})}D.element.makeClipping().show()},afterUpdateInternal:function(D){D.element.down().setStyle({bottom:(D.dims[0]-D.element.clientHeight)+"px"})},afterFinishInternal:function(D){D.element.hide().undoClipping().undoPositioned();D.element.down().undoPositioned().setStyle({bottom:A})}},arguments[1]||{}))};Effect.Squish=function(A){return new Effect.Scale(A,window.opera?1:0,{restoreAfterFinish:true,beforeSetup:function(B){B.element.makeClipping()},afterFinishInternal:function(B){B.element.hide().undoClipping()}})};Effect.Grow=function(C){C=$(C);var B=Object.extend({direction:"center",moveTransition:Effect.Transitions.sinoidal,scaleTransition:Effect.Transitions.sinoidal,opacityTransition:Effect.Transitions.full},arguments[1]||{});var A={top:C.style.top,left:C.style.left,height:C.style.height,width:C.style.width,opacity:C.getInlineOpacity()};var G=C.getDimensions();var H,F;var E,D;switch(B.direction){case"top-left":H=F=E=D=0;break;case"top-right":H=G.width;F=D=0;E=-G.width;break;case"bottom-left":H=E=0;F=G.height;D=-G.height;break;case"bottom-right":H=G.width;F=G.height;E=-G.width;D=-G.height;break;case"center":H=G.width/2;F=G.height/2;E=-G.width/2;D=-G.height/2;break}return new Effect.Move(C,{x:H,y:F,duration:0.01,beforeSetup:function(I){I.element.hide().makeClipping().makePositioned()},afterFinishInternal:function(I){new Effect.Parallel([new Effect.Opacity(I.element,{sync:true,to:1,from:0,transition:B.opacityTransition}),new Effect.Move(I.element,{x:E,y:D,sync:true,transition:B.moveTransition}),new Effect.Scale(I.element,100,{scaleMode:{originalHeight:G.height,originalWidth:G.width},sync:true,scaleFrom:window.opera?1:0,transition:B.scaleTransition,restoreAfterFinish:true})],Object.extend({beforeSetup:function(J){J.effects[0].element.setStyle({height:"0px"}).show()},afterFinishInternal:function(J){J.effects[0].element.undoClipping().undoPositioned().setStyle(A)}},B))}})};Effect.Shrink=function(C){C=$(C);var B=Object.extend({direction:"center",moveTransition:Effect.Transitions.sinoidal,scaleTransition:Effect.Transitions.sinoidal,opacityTransition:Effect.Transitions.none},arguments[1]||{});var A={top:C.style.top,left:C.style.left,height:C.style.height,width:C.style.width,opacity:C.getInlineOpacity()};var F=C.getDimensions();var E,D;switch(B.direction){case"top-left":E=D=0;break;case"top-right":E=F.width;D=0;break;case"bottom-left":E=0;D=F.height;break;case"bottom-right":E=F.width;D=F.height;break;case"center":E=F.width/2;D=F.height/2;break}return new Effect.Parallel([new Effect.Opacity(C,{sync:true,to:0,from:1,transition:B.opacityTransition}),new Effect.Scale(C,window.opera?1:0,{sync:true,transition:B.scaleTransition,restoreAfterFinish:true}),new Effect.Move(C,{x:E,y:D,sync:true,transition:B.moveTransition})],Object.extend({beforeStartInternal:function(G){G.effects[0].element.makePositioned().makeClipping()},afterFinishInternal:function(G){G.effects[0].element.hide().undoClipping().undoPositioned().setStyle(A)}},B))};Effect.Pulsate=function(C){C=$(C);var B=arguments[1]||{},A=C.getInlineOpacity(),E=B.transition||Effect.Transitions.linear,D=function(F){return 1-E((-Math.cos((F*(B.pulses||5)*2)*Math.PI)/2)+0.5)};return new Effect.Opacity(C,Object.extend(Object.extend({duration:2,from:0,afterFinishInternal:function(F){F.element.setStyle({opacity:A})}},B),{transition:D}))};Effect.Fold=function(B){B=$(B);var A={top:B.style.top,left:B.style.left,width:B.style.width,height:B.style.height};B.makeClipping();return new Effect.Scale(B,5,Object.extend({scaleContent:false,scaleX:false,afterFinishInternal:function(C){new Effect.Scale(B,1,{scaleContent:false,scaleY:false,afterFinishInternal:function(D){D.element.hide().undoClipping().setStyle(A)}})}},arguments[1]||{}))};Effect.Morph=Class.create(Effect.Base,{initialize:function(C){this.element=$(C);if(!this.element){throw (Effect._elementDoesNotExistError)}var A=Object.extend({style:{}},arguments[1]||{});if(!Object.isString(A.style)){this.style=$H(A.style)}else{if(A.style.include(":")){this.style=A.style.parseStyle()}else{this.element.addClassName(A.style);this.style=$H(this.element.getStyles());this.element.removeClassName(A.style);var B=this.element.getStyles();this.style=this.style.reject(function(D){return D.value==B[D.key]});A.afterFinishInternal=function(D){D.element.addClassName(D.options.style);D.transforms.each(function(E){D.element.style[E.style]=""})}}}this.start(A)},setup:function(){function A(B){if(!B||["rgba(0, 0, 0, 0)","transparent"].include(B)){B="#ffffff"}B=B.parseColor();return $R(0,2).map(function(C){return parseInt(B.slice(C*2+1,C*2+3),16)})}this.transforms=this.style.map(function(G){var F=G[0],E=G[1],D=null;if(E.parseColor("#zzzzzz")!="#zzzzzz"){E=E.parseColor();D="color"}else{if(F=="opacity"){E=parseFloat(E);if(Prototype.Browser.IE&&(!this.element.currentStyle.hasLayout)){this.element.setStyle({zoom:1})}}else{if(Element.CSS_LENGTH.test(E)){var C=E.match(/^([\+\-]?[0-9\.]+)(.*)$/);E=parseFloat(C[1]);D=(C.length==3)?C[2]:null}}}var B=this.element.getStyle(F);return{style:F.camelize(),originalValue:D=="color"?A(B):parseFloat(B||0),targetValue:D=="color"?A(E):E,unit:D}}.bind(this)).reject(function(B){return((B.originalValue==B.targetValue)||(B.unit!="color"&&(isNaN(B.originalValue)||isNaN(B.targetValue))))})},update:function(A){var D={},B,C=this.transforms.length;while(C--){D[(B=this.transforms[C]).style]=B.unit=="color"?"#"+(Math.round(B.originalValue[0]+(B.targetValue[0]-B.originalValue[0])*A)).toColorPart()+(Math.round(B.originalValue[1]+(B.targetValue[1]-B.originalValue[1])*A)).toColorPart()+(Math.round(B.originalValue[2]+(B.targetValue[2]-B.originalValue[2])*A)).toColorPart():(B.originalValue+(B.targetValue-B.originalValue)*A).toFixed(3)+(B.unit===null?"":B.unit)}this.element.setStyle(D,true)}});Effect.Transform=Class.create({initialize:function(A){this.tracks=[];this.options=arguments[1]||{};this.addTracks(A)},addTracks:function(A){A.each(function(B){B=$H(B);var C=B.values().first();this.tracks.push($H({ids:B.keys().first(),effect:Effect.Morph,options:{style:C}}))}.bind(this));return this},play:function(){return new Effect.Parallel(this.tracks.map(function(A){var D=A.get("ids"),C=A.get("effect"),B=A.get("options");var E=[$(D)||$$(D)].flatten();return E.map(function(F){return new C(F,Object.extend({sync:true},B))})}).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 B,A=$H();if(Prototype.Browser.WebKit){B=new Element("div",{style:this}).style}else{String.__parseStyleElement.innerHTML='<div style="'+this+'"></div>';B=String.__parseStyleElement.childNodes[0].style}Element.CSS_PROPERTIES.each(function(C){if(B[C]){A.set(C,B[C])}});if(Prototype.Browser.IE&&this.include("opacity")){A.set("opacity",this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1])}return A};if(document.defaultView&&document.defaultView.getComputedStyle){Element.getStyles=function(B){var A=document.defaultView.getComputedStyle($(B),null);return Element.CSS_PROPERTIES.inject({},function(C,D){C[D]=A[D];return C})}}else{Element.getStyles=function(B){B=$(B);var A=B.currentStyle,C;C=Element.CSS_PROPERTIES.inject({},function(D,E){D[E]=A[E];return D});if(!C.opacity){C.opacity=B.getOpacity()}return C}}Effect.Methods={morph:function(A,B){A=$(A);new Effect.Morph(A,Object.extend({style:B},arguments[2]||{}));return A},visualEffect:function(C,E,B){C=$(C);var D=E.dasherize().camelize(),A=D.charAt(0).toUpperCase()+D.substring(1);new Effect[A](C,B);return C},highlight:function(B,A){B=$(B);new Effect.Highlight(B,A);return B}};$w("fade appear grow shrink fold blindUp blindDown slideUp slideDown pulsate shake puff squish switchOff dropOut").each(function(A){Effect.Methods[A]=function(C,B){C=$(C);Effect[A.charAt(0).toUpperCase()+A.substring(1)](C,B);return C}});$w("getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles").each(function(A){Effect.Methods[A]=Element[A]});Element.addMethods(Effect.Methods);if(Object.isUndefined(Effect)){throw ("dragdrop.js requires including script.aculo.us' effects.js library")}var Droppables={drops:[],remove:function(A){this.drops=this.drops.reject(function(B){return B.element==$(A)})},add:function(B){B=$(B);var A=Object.extend({greedy:true,hoverclass:null,tree:false},arguments[1]||{});if(A.containment){A._containers=[];var C=A.containment;if(Object.isArray(C)){C.each(function(D){A._containers.push($(D))})}else{A._containers.push($(C))}}if(A.accept){A.accept=[A.accept].flatten()}Element.makePositioned(B);A.element=B;this.drops.push(A)},findDeepestChild:function(A){deepest=A[0];for(i=1;i<A.length;++i){if(Element.isParent(A[i].element,deepest.element)){deepest=A[i]}}return deepest},isContained:function(B,A){var C;if(A.tree){C=B.treeNode}else{C=B.parentNode}return A._containers.detect(function(D){return C==D})},isAffected:function(A,C,B){return((B.element!=C)&&((!B._containers)||this.isContained(C,B))&&((!B.accept)||(Element.classNames(C).detect(function(D){return B.accept.include(D)})))&&Position.within(B.element,A[0],A[1]))},deactivate:function(A){if(A.hoverclass){Element.removeClassName(A.element,A.hoverclass)}this.last_active=null},activate:function(A){if(A.hoverclass){Element.addClassName(A.element,A.hoverclass)}this.last_active=A},show:function(A,C){if(!this.drops.length){return }var B,D=[];this.drops.each(function(E){if(Droppables.isAffected(A,C,E)){D.push(E)}});if(D.length>0){B=Droppables.findDeepestChild(D)}if(this.last_active&&this.last_active!=B){this.deactivate(this.last_active)}if(B){Position.within(B.element,A[0],A[1]);if(B.onHover){B.onHover(C,B.element,Position.overlap(B.overlap,B.element))}if(B!=this.last_active){Droppables.activate(B)}}},fire:function(B,A){if(!this.last_active){return }Position.prepare();if(this.isAffected([Event.pointerX(B),Event.pointerY(B)],A,this.last_active)){if(this.last_active.onDrop){this.last_active.onDrop(A,this.last_active.element,B);return true}}},reset:function(){if(this.last_active){this.deactivate(this.last_active)}}};var Draggables={drags:[],observers:[],register:function(A){if(this.drags.length==0){this.eventMouseUp=this.endDrag.bindAsEventListener(this);this.eventMouseMove=this.updateDrag.bindAsEventListener(this);this.eventKeypress=this.keyPress.bindAsEventListener(this);Event.observe(document,"mouseup",this.eventMouseUp);Event.observe(document,"mousemove",this.eventMouseMove);Event.observe(document,"keypress",this.eventKeypress)}this.drags.push(A)},unregister:function(A){this.drags=this.drags.reject(function(B){return B==A});if(this.drags.length==0){Event.stopObserving(document,"mouseup",this.eventMouseUp);Event.stopObserving(document,"mousemove",this.eventMouseMove);Event.stopObserving(document,"keypress",this.eventKeypress)}},activate:function(A){if(A.options.delay){this._timeout=setTimeout(function(){Draggables._timeout=null;window.focus();Draggables.activeDraggable=A}.bind(this),A.options.delay)}else{window.focus();this.activeDraggable=A}},deactivate:function(){this.activeDraggable=null},updateDrag:function(A){if(!this.activeDraggable){return }var B=[Event.pointerX(A),Event.pointerY(A)];if(this._lastPointer&&(this._lastPointer.inspect()==B.inspect())){return }this._lastPointer=B;this.activeDraggable.updateDrag(A,B)},endDrag:function(A){if(this._timeout){clearTimeout(this._timeout);this._timeout=null}if(!this.activeDraggable){return }this._lastPointer=null;this.activeDraggable.endDrag(A);this.activeDraggable=null},keyPress:function(A){if(this.activeDraggable){this.activeDraggable.keyPress(A)}},addObserver:function(A){this.observers.push(A);this._cacheObserverCallbacks()},removeObserver:function(A){this.observers=this.observers.reject(function(B){return B.element==A});this._cacheObserverCallbacks()},notify:function(B,A,C){if(this[B+"Count"]>0){this.observers.each(function(D){if(D[B]){D[B](B,A,C)}})}if(A.options[B]){A.options[B](A,C)}},_cacheObserverCallbacks:function(){["onStart","onEnd","onDrag"].each(function(A){Draggables[A+"Count"]=Draggables.observers.select(function(B){return B[A]}).length})}};var Draggable=Class.create({initialize:function(B){var C={handle:false,reverteffect:function(F,E,D){var G=Math.sqrt(Math.abs(E^2)+Math.abs(D^2))*0.02;new Effect.Move(F,{x:-D,y:-E,duration:G,queue:{scope:"_draggable",position:"end"}})},endeffect:function(E){var D=Object.isNumber(E._opacity)?E._opacity:1;new Effect.Opacity(E,{duration:0.2,from:0.7,to:D,queue:{scope:"_draggable",position:"end"},afterFinish:function(){Draggable._dragging[E]=false}})},zindex:1000,revert:false,quiet:false,scroll:false,scrollSensitivity:20,scrollSpeed:15,snap:false,delay:0};if(!arguments[1]||Object.isUndefined(arguments[1].endeffect)){Object.extend(C,{starteffect:function(D){D._opacity=Element.getOpacity(D);Draggable._dragging[D]=true;new Effect.Opacity(D,{duration:0.2,from:D._opacity,to:0.7})}})}var A=Object.extend(C,arguments[1]||{});this.element=$(B);if(A.handle&&Object.isString(A.handle)){this.handle=this.element.down("."+A.handle,0)}if(!this.handle){this.handle=$(A.handle)}if(!this.handle){this.handle=this.element}if(A.scroll&&!A.scroll.scrollTo&&!A.scroll.outerHTML){A.scroll=$(A.scroll);this._isScrollChild=Element.childOf(this.element,A.scroll)}Element.makePositioned(this.element);this.options=A;this.dragging=false;this.eventMouseDown=this.initDrag.bindAsEventListener(this);Event.observe(this.handle,"mousedown",this.eventMouseDown);Draggables.register(this)},destroy:function(){Event.stopObserving(this.handle,"mousedown",this.eventMouseDown);Draggables.unregister(this)},currentDelta:function(){return([parseInt(Element.getStyle(this.element,"left")||"0"),parseInt(Element.getStyle(this.element,"top")||"0")])},initDrag:function(A){if(!Object.isUndefined(Draggable._dragging[this.element])&&Draggable._dragging[this.element]){return }if(Event.isLeftClick(A)){var C=Event.element(A);if((tag_name=C.tagName.toUpperCase())&&(tag_name=="INPUT"||tag_name=="SELECT"||tag_name=="OPTION"||tag_name=="BUTTON"||tag_name=="TEXTAREA")){return }var B=[Event.pointerX(A),Event.pointerY(A)];var D=Position.cumulativeOffset(this.element);this.offset=[0,1].map(function(E){return(B[E]-D[E])});Draggables.activate(this);Event.stop(A)}},startDrag:function(B){this.dragging=true;if(!this.delta){this.delta=this.currentDelta()}if(this.options.zindex){this.originalZ=parseInt(Element.getStyle(this.element,"z-index")||0);this.element.style.zIndex=this.options.zindex}if(this.options.ghosting){this._clone=this.element.cloneNode(true);this._originallyAbsolute=(this.element.getStyle("position")=="absolute");if(!this._originallyAbsolute){Position.absolutize(this.element)}this.element.parentNode.insertBefore(this._clone,this.element)}if(this.options.scroll){if(this.options.scroll==window){var A=this._getWindowScroll(this.options.scroll);this.originalScrollLeft=A.left;this.originalScrollTop=A.top}else{this.originalScrollLeft=this.options.scroll.scrollLeft;this.originalScrollTop=this.options.scroll.scrollTop}}Draggables.notify("onStart",this,B);if(this.options.starteffect){this.options.starteffect(this.element)}},updateDrag:function(event,pointer){if(!this.dragging){this.startDrag(event)}if(!this.options.quiet){Position.prepare();Droppables.show(pointer,this.element)}Draggables.notify("onDrag",this,event);this.draw(pointer);if(this.options.change){this.options.change(this)}if(this.options.scroll){this.stopScrolling();var p;if(this.options.scroll==window){with(this._getWindowScroll(this.options.scroll)){p=[left,top,left+width,top+height]}}else{p=Position.page(this.options.scroll);p[0]+=this.options.scroll.scrollLeft+Position.deltaX;p[1]+=this.options.scroll.scrollTop+Position.deltaY;p.push(p[0]+this.options.scroll.offsetWidth);p.push(p[1]+this.options.scroll.offsetHeight)}var speed=[0,0];if(pointer[0]<(p[0]+this.options.scrollSensitivity)){speed[0]=pointer[0]-(p[0]+this.options.scrollSensitivity)}if(pointer[1]<(p[1]+this.options.scrollSensitivity)){speed[1]=pointer[1]-(p[1]+this.options.scrollSensitivity)}if(pointer[0]>(p[2]-this.options.scrollSensitivity)){speed[0]=pointer[0]-(p[2]-this.options.scrollSensitivity)}if(pointer[1]>(p[3]-this.options.scrollSensitivity)){speed[1]=pointer[1]-(p[3]-this.options.scrollSensitivity)}this.startScrolling(speed)}if(Prototype.Browser.WebKit){window.scrollBy(0,0)}Event.stop(event)},finishDrag:function(B,E){this.dragging=false;if(this.options.quiet){Position.prepare();var D=[Event.pointerX(B),Event.pointerY(B)];Droppables.show(D,this.element)}if(this.options.ghosting){if(!this._originallyAbsolute){Position.relativize(this.element)}delete this._originallyAbsolute;Element.remove(this._clone);this._clone=null}var F=false;if(E){F=Droppables.fire(B,this.element);if(!F){F=false}}if(F&&this.options.onDropped){this.options.onDropped(this.element)}Draggables.notify("onEnd",this,B);var A=this.options.revert;if(A&&Object.isFunction(A)){A=A(this.element)}var C=this.currentDelta();if(A&&this.options.reverteffect){if(F==0||A!="failure"){this.options.reverteffect(this.element,C[1]-this.delta[1],C[0]-this.delta[0])}}else{this.delta=C}if(this.options.zindex){this.element.style.zIndex=this.originalZ}if(this.options.endeffect){this.options.endeffect(this.element)}Draggables.deactivate(this);Droppables.reset()},keyPress:function(A){if(A.keyCode!=Event.KEY_ESC){return }this.finishDrag(A,false);Event.stop(A)},endDrag:function(A){if(!this.dragging){return }this.stopScrolling();this.finishDrag(A,true);Event.stop(A)},draw:function(A){var F=Position.cumulativeOffset(this.element);if(this.options.ghosting){var C=Position.realOffset(this.element);F[0]+=C[0]-Position.deltaX;F[1]+=C[1]-Position.deltaY}var E=this.currentDelta();F[0]-=E[0];F[1]-=E[1];if(this.options.scroll&&(this.options.scroll!=window&&this._isScrollChild)){F[0]-=this.options.scroll.scrollLeft-this.originalScrollLeft;F[1]-=this.options.scroll.scrollTop-this.originalScrollTop}var D=[0,1].map(function(G){return(A[G]-F[G]-this.offset[G])}.bind(this));if(this.options.snap){if(Object.isFunction(this.options.snap)){D=this.options.snap(D[0],D[1],this)}else{if(Object.isArray(this.options.snap)){D=D.map(function(G,H){return(G/this.options.snap[H]).round()*this.options.snap[H]}.bind(this))}else{D=D.map(function(G){return(G/this.options.snap).round()*this.options.snap}.bind(this))}}}var B=this.element.style;if((!this.options.constraint)||(this.options.constraint=="horizontal")){B.left=D[0]+"px"}if((!this.options.constraint)||(this.options.constraint=="vertical")){B.top=D[1]+"px"}if(B.visibility=="hidden"){B.visibility=""}},stopScrolling:function(){if(this.scrollInterval){clearInterval(this.scrollInterval);this.scrollInterval=null;Draggables._lastScrollPointer=null}},startScrolling:function(A){if(!(A[0]||A[1])){return }this.scrollSpeed=[A[0]*this.options.scrollSpeed,A[1]*this.options.scrollSpeed];this.lastScrolled=new Date();this.scrollInterval=setInterval(this.scroll.bind(this),10)},scroll:function(){var current=new Date();var delta=current-this.lastScrolled;this.lastScrolled=current;if(this.options.scroll==window){with(this._getWindowScroll(this.options.scroll)){if(this.scrollSpeed[0]||this.scrollSpeed[1]){var d=delta/1000;this.options.scroll.scrollTo(left+d*this.scrollSpeed[0],top+d*this.scrollSpeed[1])}}}else{this.options.scroll.scrollLeft+=this.scrollSpeed[0]*delta/1000;this.options.scroll.scrollTop+=this.scrollSpeed[1]*delta/1000}Position.prepare();Droppables.show(Draggables._lastPointer,this.element);Draggables.notify("onDrag",this);if(this._isScrollChild){Draggables._lastScrollPointer=Draggables._lastScrollPointer||$A(Draggables._lastPointer);Draggables._lastScrollPointer[0]+=this.scrollSpeed[0]*delta/1000;Draggables._lastScrollPointer[1]+=this.scrollSpeed[1]*delta/1000;if(Draggables._lastScrollPointer[0]<0){Draggables._lastScrollPointer[0]=0}if(Draggables._lastScrollPointer[1]<0){Draggables._lastScrollPointer[1]=0}this.draw(Draggables._lastScrollPointer)}if(this.options.change){this.options.change(this)}},_getWindowScroll:function(w){var T,L,W,H;with(w.document){if(w.document.documentElement&&documentElement.scrollTop){T=documentElement.scrollTop;L=documentElement.scrollLeft}else{if(w.document.body){T=body.scrollTop;L=body.scrollLeft}}if(w.innerWidth){W=w.innerWidth;H=w.innerHeight}else{if(w.document.documentElement&&documentElement.clientWidth){W=documentElement.clientWidth;H=documentElement.clientHeight}else{W=body.offsetWidth;H=body.offsetHeight}}}return{top:T,left:L,width:W,height:H}}});Draggable._dragging={};var SortableObserver=Class.create({initialize:function(B,A){this.element=$(B);this.observer=A;this.lastValue=Sortable.serialize(this.element)},onStart:function(){this.lastValue=Sortable.serialize(this.element)},onEnd:function(){Sortable.unmark();if(this.lastValue!=Sortable.serialize(this.element)){this.observer(this.element)}}});var Sortable={SERIALIZE_RULE:/^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,sortables:{},_findRootElement:function(A){while(A.tagName.toUpperCase()!="BODY"){if(A.id&&Sortable.sortables[A.id]){return A}A=A.parentNode}},options:function(A){A=Sortable._findRootElement($(A));if(!A){return }return Sortable.sortables[A.id]},destroy:function(A){var B=Sortable.options(A);if(B){Draggables.removeObserver(B.element);B.droppables.each(function(C){Droppables.remove(C)});B.draggables.invoke("destroy");delete Sortable.sortables[B.element.id]}},create:function(C){C=$(C);var B=Object.extend({element:C,tag:"li",dropOnEmpty:false,tree:false,treeTag:"ul",overlap:"vertical",constraint:"vertical",containment:C,handle:false,only:false,delay:0,hoverclass:null,ghosting:false,quiet:false,scroll:false,scrollSensitivity:20,scrollSpeed:15,format:this.SERIALIZE_RULE,elements:false,handles:false,onChange:Prototype.emptyFunction,onUpdate:Prototype.emptyFunction},arguments[1]||{});this.destroy(C);var A={revert:true,quiet:B.quiet,scroll:B.scroll,scrollSpeed:B.scrollSpeed,scrollSensitivity:B.scrollSensitivity,delay:B.delay,ghosting:B.ghosting,constraint:B.constraint,handle:B.handle};if(B.starteffect){A.starteffect=B.starteffect}if(B.reverteffect){A.reverteffect=B.reverteffect}else{if(B.ghosting){A.reverteffect=function(F){F.style.top=0;F.style.left=0}}}if(B.endeffect){A.endeffect=B.endeffect}if(B.zindex){A.zindex=B.zindex}var D={overlap:B.overlap,containment:B.containment,tree:B.tree,hoverclass:B.hoverclass,onHover:Sortable.onHover};var E={onHover:Sortable.onEmptyHover,overlap:B.overlap,containment:B.containment,hoverclass:B.hoverclass};Element.cleanWhitespace(C);B.draggables=[];B.droppables=[];if(B.dropOnEmpty||B.tree){Droppables.add(C,E);B.droppables.push(C)}(B.elements||this.findElements(C,B)||[]).each(function(H,F){var G=B.handles?$(B.handles[F]):(B.handle?$(H).select("."+B.handle)[0]:H);B.draggables.push(new Draggable(H,Object.extend(A,{handle:G})));Droppables.add(H,D);if(B.tree){H.treeNode=C}B.droppables.push(H)});if(B.tree){(Sortable.findTreeElements(C,B)||[]).each(function(F){Droppables.add(F,E);F.treeNode=C;B.droppables.push(F)})}this.sortables[C.id]=B;Draggables.addObserver(new SortableObserver(C,B.onUpdate))},findElements:function(B,A){return Element.findChildren(B,A.only,A.tree?true:false,A.tag)},findTreeElements:function(B,A){return Element.findChildren(B,A.only,A.tree?true:false,A.treeTag)},onHover:function(E,D,A){if(Element.isParent(D,E)){return }if(A>0.33&&A<0.66&&Sortable.options(D).tree){return }else{if(A>0.5){Sortable.mark(D,"before");if(D.previousSibling!=E){var B=E.parentNode;E.style.visibility="hidden";D.parentNode.insertBefore(E,D);if(D.parentNode!=B){Sortable.options(B).onChange(E)}Sortable.options(D.parentNode).onChange(E)}}else{Sortable.mark(D,"after");var C=D.nextSibling||null;if(C!=E){var B=E.parentNode;E.style.visibility="hidden";D.parentNode.insertBefore(E,C);if(D.parentNode!=B){Sortable.options(B).onChange(E)}Sortable.options(D.parentNode).onChange(E)}}}},onEmptyHover:function(E,G,H){var I=E.parentNode;var A=Sortable.options(G);if(!Element.isParent(G,E)){var F;var C=Sortable.findElements(G,{tag:A.tag,only:A.only});var B=null;if(C){var D=Element.offsetSize(G,A.overlap)*(1-H);for(F=0;F<C.length;F+=1){if(D-Element.offsetSize(C[F],A.overlap)>=0){D-=Element.offsetSize(C[F],A.overlap)}else{if(D-(Element.offsetSize(C[F],A.overlap)/2)>=0){B=F+1<C.length?C[F+1]:null;break}else{B=C[F];break}}}}G.insertBefore(E,B);Sortable.options(I).onChange(E);A.onChange(E)}},unmark:function(){if(Sortable._marker){Sortable._marker.hide()}},mark:function(B,A){var D=Sortable.options(B.parentNode);if(D&&!D.ghosting){return 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B=Object.extend({tag:C.tag,treeTag:C.treeTag,only:C.only,name:D.id,format:C.format},arguments[1]||{});var A={id:null,parent:null,children:[],container:D,position:0};return Sortable._tree(D,B,A)},_constructIndex:function(B){var A="";do{if(B.id){A="["+B.position+"]"+A}}while((B=B.parent)!=null);return A},sequence:function(B){B=$(B);var A=Object.extend(this.options(B),arguments[1]||{});return $(this.findElements(B,A)||[]).map(function(C){return C.id.match(A.format)?C.id.match(A.format)[1]:""})},setSequence:function(B,C){B=$(B);var A=Object.extend(this.options(B),arguments[2]||{});var D={};this.findElements(B,A).each(function(E){if(E.id.match(A.format)){D[E.id.match(A.format)[1]]=[E,E.parentNode]}E.parentNode.removeChild(E)});C.each(function(E){var F=D[E];if(F){F[1].appendChild(F[0]);delete D[E]}})},serialize:function(C){C=$(C);var B=Object.extend(Sortable.options(C),arguments[1]||{});var A=encodeURIComponent((arguments[1]&&arguments[1].name)?arguments[1].name:C.id);if(B.tree){return Sortable.tree(C,arguments[1]).children.map(function(D){return[A+Sortable._constructIndex(D)+"[id]="+encodeURIComponent(D.id)].concat(D.children.map(arguments.callee))}).flatten().join("&")}else{return Sortable.sequence(C,arguments[1]).map(function(D){return A+"[]="+encodeURIComponent(D)}).join("&")}}};Element.isParent=function(B,A){if(!B.parentNode||B==A){return false}if(B.parentNode==A){return true}return Element.isParent(B.parentNode,A)};Element.findChildren=function(D,B,A,C){if(!D.hasChildNodes()){return null}C=C.toUpperCase();if(B){B=[B].flatten()}var E=[];$A(D.childNodes).each(function(G){if(G.tagName&&G.tagName.toUpperCase()==C&&(!B||(Element.classNames(G).detect(function(H){return B.include(H)})))){E.push(G)}if(A){var F=Element.findChildren(G,B,A,C);if(F){E.push(F)}}});return(E.length>0?E.flatten():[])};Element.offsetSize=function(A,B){return A["offset"+((B=="vertical"||B=="height")?"Height":"Width")]};if(typeof Effect=="undefined"){throw ("controls.js requires including script.aculo.us' effects.js library")}var Autocompleter={};Autocompleter.Base=Class.create({baseInitialize:function(B,C,A){B=$(B);this.element=B;this.update=$(C);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(A)}else{this.options=A||{}}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(D,E){if(!E.style.position||E.style.position=="absolute"){E.style.position="absolute";Position.clone(D,E,{setHeight:false,offsetTop:D.offsetHeight})}Effect.Appear(E,{duration:0.15})};this.options.onHide=this.options.onHide||function(D,E){new Effect.Fade(E,{duration:0.15})};if(typeof (this.options.tokens)=="string"){this.options.tokens=new Array(this.options.tokens)}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(A){if(this.active){switch(A.keyCode){case Event.KEY_TAB:case Event.KEY_RETURN:this.selectEntry();Event.stop(A);case Event.KEY_ESC:this.hide();this.active=false;Event.stop(A);return ;case Event.KEY_LEFT:case Event.KEY_RIGHT:return ;case Event.KEY_UP:this.markPrevious();this.render();Event.stop(A);return ;case Event.KEY_DOWN:this.markNext();this.render();Event.stop(A);return }}else{if(A.keyCode==Event.KEY_TAB||A.keyCode==Event.KEY_RETURN||(Prototype.Browser.WebKit>0&&A.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(B){var A=Event.findElement(B,"LI");if(this.index!=A.autocompleteIndex){this.index=A.autocompleteIndex;this.render()}Event.stop(B)},onClick:function(B){var A=Event.findElement(B,"LI");this.index=A.autocompleteIndex;this.selectEntry();this.hide()},onBlur:function(A){setTimeout(this.hide.bind(this),250);this.hasFocus=false;this.active=false},render:function(){if(this.entryCount>0){for(var A=0;A<this.entryCount;A++){this.index==A?Element.addClassName(this.getEntry(A),"selected"):Element.removeClassName(this.getEntry(A),"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(A){return this.update.firstChild.childNodes[A]},getCurrentEntry:function(){return this.getEntry(this.index)},selectEntry:function(){this.active=false;this.updateElement(this.getCurrentEntry())},updateElement:function(F){if(this.options.updateElement){this.options.updateElement(F);return }var D="";if(this.options.select){var A=$(F).select("."+this.options.select)||[];if(A.length>0){D=Element.collectTextNodes(A[0],this.options.select)}}else{D=Element.collectTextNodesIgnoreClass(F,"informal")}var C=this.getTokenBounds();if(C[0]!=-1){var E=this.element.value.substr(0,C[0]);var B=this.element.value.substr(C[0]).match(/^\s+/);if(B){E+=B[0]}this.element.value=E+D+this.element.value.substr(C[1])}else{this.element.value=D}this.oldElementValue=this.element.value;this.element.focus();if(this.options.afterUpdateElement){this.options.afterUpdateElement(this.element,F)}},updateChoices:function(C){if(!this.changed&&this.hasFocus){this.update.innerHTML=C;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 A=0;A<this.entryCount;A++){var B=this.getEntry(A);B.autocompleteIndex=A;this.addObservers(B)}}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(A){Event.observe(A,"mouseover",this.onHover.bindAsEventListener(this));Event.observe(A,"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 A=this.getTokenBounds();return this.element.value.substring(A[0],A[1]).strip()},getTokenBounds:function(){if(null!=this.tokenBounds){return this.tokenBounds}var E=this.element.value;if(E.strip().empty()){return[-1,0]}var F=arguments.callee.getFirstDifferencePos(E,this.oldElementValue);var H=(F==this.oldElementValue.length?1:0);var D=-1,C=E.length;var G;for(var B=0,A=this.options.tokens.length;B<A;++B){G=E.lastIndexOf(this.options.tokens[B],F+H-1);if(G>D){D=G}G=E.indexOf(this.options.tokens[B],F+H);if(-1!=G&&G<C){C=G}}return(this.tokenBounds=[D+1,C])}});Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos=function(C,A){var D=Math.min(C.length,A.length);for(var B=0;B<D;++B){if(C[B]!=A[B]){return B}}return D};Ajax.Autocompleter=Class.create(Autocompleter.Base,{initialize:function(C,D,B,A){this.baseInitialize(C,D,A);this.options.asynchronous=true;this.options.onComplete=this.onComplete.bind(this);this.options.defaultParams=this.options.parameters||null;this.url=B},getUpdatedChoices:function(){this.startIndicator();var A=encodeURIComponent(this.options.paramName)+"="+encodeURIComponent(this.getToken());this.options.parameters=this.options.callback?this.options.callback(this.element,A):A;if(this.options.defaultParams){this.options.parameters+="&"+this.options.defaultParams}new Ajax.Request(this.url,this.options)},onComplete:function(A){this.updateChoices(A.responseText)}});Autocompleter.Local=Class.create(Autocompleter.Base,{initialize:function(B,D,C,A){this.baseInitialize(B,D,A);this.options.array=C},getUpdatedChoices:function(){this.updateChoices(this.options.selector(this))},setOptions:function(A){this.options=Object.extend({choices:10,partialSearch:true,partialChars:2,ignoreCase:true,fullSearch:false,selector:function(B){var D=[];var C=[];var H=B.getToken();var G=0;for(var E=0;E<B.options.array.length&&D.length<B.options.choices;E++){var F=B.options.array[E];var I=B.options.ignoreCase?F.toLowerCase().indexOf(H.toLowerCase()):F.indexOf(H);while(I!=-1){if(I==0&&F.length!=H.length){D.push("<li><strong>"+F.substr(0,H.length)+"</strong>"+F.substr(H.length)+"</li>");break}else{if(H.length>=B.options.partialChars&&B.options.partialSearch&&I!=-1){if(B.options.fullSearch||/\s/.test(F.substr(I-1,1))){C.push("<li>"+F.substr(0,I)+"<strong>"+F.substr(I,H.length)+"</strong>"+F.substr(I+H.length)+"</li>");break}}}I=B.options.ignoreCase?F.toLowerCase().indexOf(H.toLowerCase(),I+1):F.indexOf(H,I+1)}}if(C.length){D=D.concat(C.slice(0,B.options.choices-D.length))}return"<ul>"+D.join("")+"</ul>"}},A||{})}});Field.scrollFreeActivate=function(A){setTimeout(function(){Field.activate(A)},1)};Ajax.InPlaceEditor=Class.create({initialize:function(C,B,A){this.url=B;this.element=C=$(C);this.prepareOptions();this._controls={};arguments.callee.dealWithDeprecatedOptions(A);Object.extend(this.options,A||{});if(!this.options.formId&&this.element.id){this.options.formId=this.element.id+"-inplaceeditor";if($(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(A){if(!this._editing||A.ctrlKey||A.altKey||A.shiftKey){return }if(Event.KEY_ESC==A.keyCode){this.handleFormCancellation(A)}else{if(Event.KEY_RETURN==A.keyCode){this.handleFormSubmission(A)}}},createControl:function(G,C,B){var E=this.options[G+"Control"];var F=this.options[G+"Text"];if("button"==E){var A=document.createElement("input");A.type="submit";A.value=F;A.className="editor_"+G+"_button";if("cancel"==G){A.onclick=this._boundCancelHandler}this._form.appendChild(A);this._controls[G]=A}else{if("link"==E){var D=document.createElement("a");D.href="#";D.appendChild(document.createTextNode(F));D.onclick="cancel"==G?this._boundCancelHandler:this._boundSubmitHandler;D.className="editor_"+G+"_link";if(B){D.className+=" "+B}this._form.appendChild(D);this._controls[G]=D}}},createEditField:function(){var C=(this.options.loadTextURL?this.options.loadingText:this.getText());var B;if(1>=this.options.rows&&!/\r|\n/.test(this.getText())){B=document.createElement("input");B.type="text";var A=this.options.size||this.options.cols||0;if(0<A){B.size=A}}else{B=document.createElement("textarea");B.rows=(1>=this.options.rows?this.options.autoRows:this.options.rows);B.cols=this.options.cols||40}B.name=this.options.paramName;B.value=C;B.className="editor_field";if(this.options.submitOnBlur){B.onblur=this._boundSubmitHandler}this._controls.editor=B;if(this.options.loadTextURL){this.loadExternalText()}this._form.appendChild(this._controls.editor)},createForm:function(){var B=this;function A(D,E){var C=B.options["text"+D+"Controls"];if(!C||E===false){return }B._form.appendChild(document.createTextNode(C))}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)}A("Before",this.options.okControl||this.options.cancelControl);this.createControl("ok",this._boundSubmitHandler);A("Between",this.options.okControl&&this.options.cancelControl);this.createControl("cancel",this._boundCancelHandler,"editor_cancel");A("After",this.options.okControl||this.options.cancelControl)},destroy:function(){if(this._oldInnerHTML){this.element.innerHTML=this._oldInnerHTML}this.leaveEditMode();this.unregisterListeners()},enterEditMode:function(A){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(A){Event.stop(A)}},enterHover:function(A){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(A){this.triggerCallback("onFailure",A);if(this._oldInnerHTML){this.element.innerHTML=this._oldInnerHTML;this._oldInnerHTML=null}},handleFormCancellation:function(A){this.wrapUp();if(A){Event.stop(A)}},handleFormSubmission:function(D){var B=this._form;var C=$F(this._controls.editor);this.prepareSubmission();var E=this.options.callback(B,C)||"";if(Object.isString(E)){E=E.toQueryParams()}E.editorId=this.element.id;if(this.options.htmlResponse){var A=Object.extend({evalScripts:true},this.options.ajaxOptions);Object.extend(A,{parameters:E,onComplete:this._boundWrapperHandler,onFailure:this._boundFailureHandler});new Ajax.Updater({success:this.element},this.url,A)}else{var A=Object.extend({method:"get"},this.options.ajaxOptions);Object.extend(A,{parameters:E,onComplete:this._boundWrapperHandler,onFailure:this._boundFailureHandler});new Ajax.Request(this.url,A)}if(D){Event.stop(D)}},leaveEditMode:function(){this.element.removeClassName(this.options.savingClassName);this.removeForm();this.leaveHover();this.element.style.backgroundColor=this._originalBackground;this.element.show();if(this.options.externalControl){this.options.externalControl.show()}this._saving=false;this._editing=false;this._oldInnerHTML=null;this.triggerCallback("onLeaveEditMode")},leaveHover:function(A){if(this.options.hoverClassName){this.element.removeClassName(this.options.hoverClassName)}if(this._saving){return }this.triggerCallback("onLeaveHover")},loadExternalText:function(){this._form.addClassName(this.options.loadingClassName);this._controls.editor.disabled=true;var A=Object.extend({method:"get"},this.options.ajaxOptions);Object.extend(A,{parameters:"editorId="+encodeURIComponent(this.element.id),onComplete:Prototype.emptyFunction,onSuccess:function(C){this._form.removeClassName(this.options.loadingClassName);var B=C.responseText;if(this.options.stripLoadedTextTags){B=B.stripTags()}this._controls.editor.value=B;this._controls.editor.disabled=false;this.postProcessEditField()}.bind(this),onFailure:this._boundFailureHandler});new Ajax.Request(this.options.loadTextURL,A)},postProcessEditField:function(){var A=this.options.fieldPostCreation;if(A){$(this._controls.editor)["focus"==A?"focus":"activate"]()}},prepareOptions:function(){this.options=Object.clone(Ajax.InPlaceEditor.DefaultOptions);Object.extend(this.options,Ajax.InPlaceEditor.DefaultCallbacks);[this._extraDefaultOptions].flatten().compact().each(function(A){Object.extend(this.options,A)}.bind(this))},prepareSubmission:function(){this._saving=true;this.removeForm();this.leaveHover();this.showSaving()},registerListeners:function(){this._listeners={};var A;$H(Ajax.InPlaceEditor.Listeners).each(function(B){A=this[B.value].bind(this);this._listeners[B.key]=A;if(!this.options.externalControlOnly){this.element.observe(B.key,A)}if(this.options.externalControl){this.options.externalControl.observe(B.key,A)}}.bind(this))},removeForm:function(){if(!this._form){return }this._form.remove();this._form=null;this._controls={}},showSaving:function(){this._oldInnerHTML=this.element.innerHTML;this.element.innerHTML=this.options.savingText;this.element.addClassName(this.options.savingClassName);this.element.style.backgroundColor=this._originalBackground;this.element.show()},triggerCallback:function(B,A){if("function"==typeof this.options[B]){this.options[B](this,A)}},unregisterListeners:function(){$H(this._listeners).each(function(A){if(!this.options.externalControlOnly){this.element.stopObserving(A.key,A.value)}if(this.options.externalControl){this.options.externalControl.stopObserving(A.key,A.value)}}.bind(this))},wrapUp:function(A){this.leaveEditMode();this._boundComplete(A,this.element)}});Object.extend(Ajax.InPlaceEditor.prototype,{dispose:Ajax.InPlaceEditor.prototype.destroy});Ajax.InPlaceCollectionEditor=Class.create(Ajax.InPlaceEditor,{initialize:function($super,C,B,A){this._extraDefaultOptions=Ajax.InPlaceCollectionEditor.DefaultOptions;$super(C,B,A)},createEditField:function(){var A=document.createElement("select");A.name=this.options.paramName;A.size=1;this._controls.editor=A;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)){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(B){this._controls.editor.disabled=true;var A=this._controls.editor.firstChild;if(!A){A=document.createElement("option");A.value="";this._controls.editor.appendChild(A);A.selected=true}A.update((B||"").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 A=Object.extend({method:"get"},this.options.ajaxOptions);Object.extend(A,{parameters:"editorId="+encodeURIComponent(this.element.id),onComplete:Prototype.emptyFunction,onSuccess:function(B){this._text=B.responseText.strip();this.buildOptionList()}.bind(this),onFailure:this.onFailure});new Ajax.Request(this.options.loadTextURL,A)},buildOptionList:function(){this._form.removeClassName(this.options.loadingClassName);this._collection=this._collection.map(function(D){return 2===D.length?D:[D,D].flatten()});var B=("value" in this.options)?this.options.value:this._text;var A=this._collection.any(function(D){return D[0]==B}.bind(this));this._controls.editor.update("");var C;this._collection.each(function(E,D){C=document.createElement("option");C.value=E[0];C.selected=A?E[0]==B:0==D;C.appendChild(document.createTextNode(E[1]));this._controls.editor.appendChild(C)}.bind(this));this._controls.editor.disabled=false;Field.scrollFreeActivate(this._controls.editor)}});Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions=function(A){if(!A){return }function B(C,D){if(C in A||D===undefined){return }A[C]=D}B("cancelControl",(A.cancelLink?"link":(A.cancelButton?"button":A.cancelLink==A.cancelButton==false?false:undefined)));B("okControl",(A.okLink?"link":(A.okButton?"button":A.okLink==A.okButton==false?false:undefined)));B("highlightColor",A.highlightcolor);B("highlightEndColor",A.highlightendcolor)};Object.extend(Ajax.InPlaceEditor,{DefaultOptions:{ajaxOptions:{},autoRows:3,cancelControl:"link",cancelText:"cancel",clickToEditText:"Click to edit",externalControl:null,externalControlOnly:false,fieldPostCreation:"activate",formClassName:"inplaceeditor-form",formId:null,highlightColor:"#ffff99",highlightEndColor:"#ffffff",hoverClassName:"",htmlResponse:true,loadingClassName:"inplaceeditor-loading",loadingText:"Loading...",okControl:"button",okText:"ok",paramName:"value",rows:1,savingClassName:"inplaceeditor-saving",savingText:"Saving...",size:0,stripLoadedTextTags:false,submitOnBlur:false,textAfterControls:"",textBeforeControls:"",textBetweenControls:""},DefaultCallbacks:{callback:function(A){return Form.serialize(A)},onComplete:function(B,A){new Effect.Highlight(A,{startcolor:this.options.highlightColor,keepBackgroundImage:true})},onEnterEditMode:null,onEnterHover:function(A){A.element.style.backgroundColor=A.options.highlightColor;if(A._effect){A._effect.cancel()}},onFailure:function(B,A){alert("Error communication with the server: "+B.responseText.stripTags())},onFormCustomization:null,onLeaveEditMode:null,onLeaveHover:function(A){A._effect=new Effect.Highlight(A.element,{startcolor:A.options.highlightColor,endcolor:A.options.highlightEndColor,restorecolor:A._originalBackground,keepBackgroundImage:true})}},Listeners:{click:"enterEditMode",keydown:"checkForEscapeOrReturn",mouseover:"enterHover",mouseout:"leaveHover"}});Ajax.InPlaceCollectionEditor.DefaultOptions={loadingCollectionText:"Loading options..."};Form.Element.DelayedObserver=Class.create({initialize:function(B,A,C){this.delay=A||0.5;this.element=$(B);this.callback=C;this.timer=null;this.lastValue=$F(this.element);Event.observe(this.element,"keyup",this.delayedListener.bindAsEventListener(this))},delayedListener:function(A){if(this.lastValue==$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))}});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"},node:function(A){A=A.toUpperCase();var F=this.NODEMAP[A]||"div";var B=document.createElement(F);try{B.innerHTML="<"+A+"></"+A+">"}catch(E){}var D=B.firstChild||null;if(D&&(D.tagName.toUpperCase()!=A)){D=D.getElementsByTagName(A)[0]}if(!D){D=document.createElement(A)}if(!D){return }if(arguments[1]){if(this._isStringOrNumber(arguments[1])||(arguments[1] instanceof Array)||arguments[1].tagName){this._children(D,arguments[1])}else{var C=this._attributes(arguments[1]);if(C.length){try{B.innerHTML="<"+A+" "+C+"></"+A+">"}catch(E){}D=B.firstChild||null;if(!D){D=document.createElement(A);for(attr in arguments[1]){D[attr=="class"?"className":attr]=arguments[1][attr]}}if(D.tagName.toUpperCase()!=A){D=B.getElementsByTagName(A)[0]}}}}if(arguments[2]){this._children(D,arguments[2])}return D},_text:function(A){return document.createTextNode(A)},ATTR_MAP:{className:"class",htmlFor:"for"},_attributes:function(A){var B=[];for(attribute in A){B.push((attribute in this.ATTR_MAP?this.ATTR_MAP[attribute]:attribute)+'="'+A[attribute].toString().escapeHTML().gsub(/"/,"&quot;")+'"')}return B.join(" ")},_children:function(B,A){if(A.tagName){B.appendChild(A);return }if(typeof A=="object"){A.flatten().each(function(C){if(typeof C=="object"){B.appendChild(C)}else{if(Builder._isStringOrNumber(C)){B.appendChild(Builder._text(C))}}})}else{if(Builder._isStringOrNumber(A)){B.appendChild(Builder._text(A))}}},_isStringOrNumber:function(A){return(typeof A=="string"||typeof A=="number")},build:function(B){var A=this.node("div");$(A).update(B.strip());return A.down()},dump:function(B){if(typeof B!="object"&&typeof B!="function"){B=window}var A=("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);A.each(function(C){B[C]=function(){return Builder.node.apply(Builder,[C].concat($A(arguments)))}})}};if(!Control){var Control={}}Control.Slider=Class.create({initialize:function(D,A,B){var C=this;if(Object.isArray(D)){this.handles=D.collect(function(E){return $(E)})}else{this.handles=[$(D)]}this.track=$(A);this.options=B||{};this.axis=this.options.axis||"horizontal";this.increment=this.options.increment||1;this.step=parseInt(this.options.step||"1");this.range=this.options.range||$R(0,1);this.value=0;this.values=this.handles.map(function(){return 0});this.spans=this.options.spans?this.options.spans.map(function(E){return $(E)}):false;this.options.startSpan=$(this.options.startSpan||null);this.options.endSpan=$(this.options.endSpan||null);this.restricted=this.options.restricted||false;this.maximum=this.options.maximum||this.range.end;this.minimum=this.options.minimum||this.range.start;this.alignX=parseInt(this.options.alignX||"0");this.alignY=parseInt(this.options.alignY||"0");this.trackLength=this.maximumOffset()-this.minimumOffset();this.handleLength=this.isVertical()?(this.handles[0].offsetHeight!=0?this.handles[0].offsetHeight:this.handles[0].style.height.replace(/px$/,"")):(this.handles[0].offsetWidth!=0?this.handles[0].offsetWidth:this.handles[0].style.width.replace(/px$/,""));this.active=false;this.dragging=false;this.disabled=false;if(this.options.disabled){this.setDisabled()}this.allowedValues=this.options.values?this.options.values.sortBy(Prototype.K):false;if(this.allowedValues){this.minimum=this.allowedValues.min();this.maximum=this.allowedValues.max()}this.eventMouseDown=this.startDrag.bindAsEventListener(this);this.eventMouseUp=this.endDrag.bindAsEventListener(this);this.eventMouseMove=this.update.bindAsEventListener(this);this.handles.each(function(F,E){E=C.handles.length-1-E;C.setValue(parseFloat((Object.isArray(C.options.sliderValue)?C.options.sliderValue[E]:C.options.sliderValue)||C.range.start),E);F.makePositioned().observe("mousedown",C.eventMouseDown)});this.track.observe("mousedown",this.eventMouseDown);document.observe("mouseup",this.eventMouseUp);document.observe("mousemove",this.eventMouseMove);this.initialized=true},dispose:function(){var A=this;Event.stopObserving(this.track,"mousedown",this.eventMouseDown);Event.stopObserving(document,"mouseup",this.eventMouseUp);Event.stopObserving(document,"mousemove",this.eventMouseMove);this.handles.each(function(B){Event.stopObserving(B,"mousedown",A.eventMouseDown)})},setDisabled:function(){this.disabled=true},setEnabled:function(){this.disabled=false},getNearestValue:function(A){if(this.allowedValues){if(A>=this.allowedValues.max()){return(this.allowedValues.max())}if(A<=this.allowedValues.min()){return(this.allowedValues.min())}var C=Math.abs(this.allowedValues[0]-A);var B=this.allowedValues[0];this.allowedValues.each(function(D){var E=Math.abs(D-A);if(E<=C){B=D;C=E}});return B}if(A>this.range.end){return this.range.end}if(A<this.range.start){return this.range.start}return A},setValue:function(B,A){if(!this.active){this.activeHandleIdx=A||0;this.activeHandle=this.handles[this.activeHandleIdx];this.updateStyles()}A=A||this.activeHandleIdx||0;if(this.initialized&&this.restricted){if((A>0)&&(B<this.values[A-1])){B=this.values[A-1]}if((A<(this.handles.length-1))&&(B>this.values[A+1])){B=this.values[A+1]}}B=this.getNearestValue(B);this.values[A]=B;this.value=this.values[0];this.handles[A].style[this.isVertical()?"top":"left"]=this.translateToPx(B);this.drawSpans();if(!this.dragging||!this.event){this.updateFinished()}},setValueBy:function(B,A){this.setValue(this.values[A||this.activeHandleIdx||0]+B,A||this.activeHandleIdx||0)},translateToPx:function(A){return Math.round(((this.trackLength-this.handleLength)/(this.range.end-this.range.start))*(A-this.range.start))+"px"},translateToValue:function(A){return((A/(this.trackLength-this.handleLength)*(this.range.end-this.range.start))+this.range.start)},getRange:function(B){var A=this.values.sortBy(Prototype.K);B=B||0;return $R(A[B],A[B+1])},minimumOffset:function(){return(this.isVertical()?this.alignY:this.alignX)},maximumOffset:function(){return(this.isVertical()?(this.track.offsetHeight!=0?this.track.offsetHeight:this.track.style.height.replace(/px$/,""))-this.alignY:(this.track.offsetWidth!=0?this.track.offsetWidth:this.track.style.width.replace(/px$/,""))-this.alignX)},isVertical:function(){return(this.axis=="vertical")},drawSpans:function(){var A=this;if(this.spans){$R(0,this.spans.length-1).each(function(B){A.setSpan(A.spans[B],A.getRange(B))})}if(this.options.startSpan){this.setSpan(this.options.startSpan,$R(0,this.values.length>1?this.getRange(0).min():this.value))}if(this.options.endSpan){this.setSpan(this.options.endSpan,$R(this.values.length>1?this.getRange(this.spans.length-1).max():this.value,this.maximum))}},setSpan:function(B,A){if(this.isVertical()){B.style.top=this.translateToPx(A.start);B.style.height=this.translateToPx(A.end-A.start+this.range.start)}else{B.style.left=this.translateToPx(A.start);B.style.width=this.translateToPx(A.end-A.start+this.range.start)}},updateStyles:function(){this.handles.each(function(A){Element.removeClassName(A,"selected")});Element.addClassName(this.activeHandle,"selected")},startDrag:function(C){if(Event.isLeftClick(C)){if(!this.disabled){this.active=true;var D=Event.element(C);var E=[Event.pointerX(C),Event.pointerY(C)];var A=D;if(A==this.track){var B=Position.cumulativeOffset(this.track);this.event=C;this.setValue(this.translateToValue((this.isVertical()?E[1]-B[1]:E[0]-B[0])-(this.handleLength/2)));var B=Position.cumulativeOffset(this.activeHandle);this.offsetX=(E[0]-B[0]);this.offsetY=(E[1]-B[1])}else{while((this.handles.indexOf(D)==-1)&&D.parentNode){D=D.parentNode}if(this.handles.indexOf(D)!=-1){this.activeHandle=D;this.activeHandleIdx=this.handles.indexOf(this.activeHandle);this.updateStyles();var B=Position.cumulativeOffset(this.activeHandle);this.offsetX=(E[0]-B[0]);this.offsetY=(E[1]-B[1])}}}Event.stop(C)}},update:function(A){if(this.active){if(!this.dragging){this.dragging=true}this.draw(A);if(Prototype.Browser.WebKit){window.scrollBy(0,0)}Event.stop(A)}},draw:function(B){var C=[Event.pointerX(B),Event.pointerY(B)];var A=Position.cumulativeOffset(this.track);C[0]-=this.offsetX+A[0];C[1]-=this.offsetY+A[1];this.event=B;this.setValue(this.translateToValue(this.isVertical()?C[1]:C[0]));if(this.initialized&&this.options.onSlide){this.options.onSlide(this.values.length>1?this.values:this.value,this)}},endDrag:function(A){if(this.active&&this.dragging){this.finishDrag(A,true);Event.stop(A)}this.active=false;this.dragging=false},finishDrag:function(A,B){this.active=false;this.dragging=false;this.updateFinished()},updateFinished:function(){if(this.initialized&&this.options.onChange){this.options.onChange(this.values.length>1?this.values:this.value,this)}this.event=null}});Sound={tracks:{},_enabled:true,template:new Template('<embed style="height:0" id="sound_#{track}_#{id}" src="#{url}" loop="false" autostart="true" hidden="true"/>'),enable:function(){Sound._enabled=true},disable:function(){Sound._enabled=false},play:function(B){if(!Sound._enabled){return }var A=Object.extend({track:"global",url:B,replace:false},arguments[1]||{});if(A.replace&&this.tracks[A.track]){$R(0,this.tracks[A.track].id).each(function(D){var C=$("sound_"+A.track+"_"+D);C.Stop&&C.Stop();C.remove()});this.tracks[A.track]=null}if(!this.tracks[A.track]){this.tracks[A.track]={id:0}}else{this.tracks[A.track].id++}A.id=this.tracks[A.track].id;$$("body")[0].insert(Prototype.Browser.IE?new Element("bgsound",{id:"sound_"+A.track+"_"+A.id,src:A.url,loop:1,autostart:true}):Sound.template.evaluate(A))}};if(Prototype.Browser.Gecko&&navigator.userAgent.indexOf("Win")>0){if(navigator.plugins&&$A(navigator.plugins).detect(function(A){return A.name.indexOf("QuickTime")!=-1})){Sound.template=new Template('<object id="sound_#{track}_#{id}" width="0" height="0" type="audio/mpeg" data="#{url}"/>')}else{Sound.play=function(){}}};

// EBubble.js 
//
//   This Javascript is provided by Mike Williams
//   Blackpool Community Church Javascript Team
//   http://www.commchurch.freeserve.co.uk/   
//   http://econym.googlepages.com/index.htm
//
//   This work is licenced under a Creative Commons Licence
//   http://creativecommons.org/licenses/by/2.0/uk/
//
// Version 0.0  13/07/2007 Initial version
// Version 0.1  14/07/2007 Bugfix: Was failing to apply the position offset.
// Version 0.2  30/07/2007 Bugfix: Wasn't clearingout the old contents.
// Version 0.3  21/09/2007 Added noCloseOnClick parameter
// version 0.4  25/12/2007 Bugfix: Problem with offset

function EBubble(map,image,size,insize,inset,anchor,noCloseOnClick) {
	// parameters
	var that=this;
	this.map = map;
	this.image=image;
	this.size=size;
	this.insize=insize;
	this.inset=inset;
	this.anchor=anchor;
	this.noCloseOnClick=noCloseOnClick;
	// internal variables
	this.visible = false;
	// browser - specific variables
	this.ie = false;
	var agent = navigator.userAgent.toLowerCase();
	if ((agent.indexOf("msie") > -1) && (agent.indexOf("opera") < 1)){ this.ie = true} else {this.ie = false}

	this.div1 = document.createElement("div");
	this.div1.style.position = "absolute";
	this.div1.style.display="none";
	document.body.appendChild(this.div1);


	if (this.ie && this.image.indexOf(".png")>-1) {
		var loader = "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+this.image+"', sizingMethod='scale');";
		this.div1.innerHTML = '<div id="theBubbleImage" style="height:' +this.size.height+ 'px; width:'+this.size.width+'px; ' +loader+ '" ></div>';
	} else {
		this.div1.innerHTML = '<img id="theBubbleImage" src="' + this.image + '" width="' + this.size.width +'" height="' + this.size.height +'">';
	}
	// === Close the bubble if the map moves ===
	GEvent.addListener(map, "dragstart", function() {
			that.hide();
        } );
	GEvent.addListener(map, "moveend", function() {
			that.hide();
        } );
	// === Listen for clicks and mousedowns ===
	GEvent.addDomListener(this.div1,"click", function() {
			if (!that.noCloseOnClick) that.hide();
			GEvent.trigger(that,"click");
        });
	GEvent.addDomListener(this.div1,"mousedown", function() {
			if (!that.noCloseOnClick) that.hide();
			GEvent.trigger(that,"click");
        });

	this.div2 = document.createElement("div");
	this.div1.appendChild(this.div2);
	this.div2.style.position = "absolute";
	this.div2.style.left = this.inset.x + "px"; 
	this.div2.style.top = this.inset.y + "px";
	this.div2.style.width = this.insize.width + "px";
	this.div2.style.height = this.insize.height + "px";
} 

EBubble.prototype.openOnMap = function(point, html, offset, onClickFunction) {
	this.offset = offset||new GPoint(0,0);
	this.point = point;

	//div2.style.backgroundColor = "#0000ff"; 
	this.div2.innerHTML = html;
	GEvent.addDomListener($(this.div2).down('div'),'click',onClickFunction);

	// pixel relative to map world
	var p = this.map.fromLatLngToDivPixel(point);

	// map world relative to map container
	var dragObject = this.map.getPane(G_MAP_MAP_PANE).parentNode;
	var x = p.x + parseInt(dragObject.style.left);
	var y = p.y + parseInt(dragObject.style.top);

	// map container relative to the page
	y += this.map.getContainer().offsetTop;
	x += this.map.getContainer().offsetLeft;
        
	// offset by the requested anchor position
	y -= this.anchor.y;
	x -= this.anchor.x;

	// offset by the specified offset position
	y -= this.offset.y;
	x -= this.offset.x;


	// Apply those values 
	this.div1.style.left = x+"px";
	this.div1.style.top = y+"px";
        
	// make it visible
	this.visible = true;
	this.show();
}
      
EBubble.prototype.openOnMarker = function(marker,html,onClickFunction) {
    var vx = marker.getIcon().iconAnchor.x - marker.getIcon().infoWindowAnchor.x;
    var vy = marker.getIcon().iconAnchor.y - marker.getIcon().infoWindowAnchor.y;
    this.openOnMap(marker.getPoint(), html, new GPoint(vx,vy),onClickFunction);
}
      

EBubble.prototype.show = function() {
	this.div1.style.display="";
	this.div2.style.display="";
	this.visible = true;
}

EBubble.prototype.hide = function() {
	this.div1.style.display="none";
	//this.div2.style.display="none";
	this.visible = false;
}

EBubble.prototype.isHidden = function() {return !this.visible;}

EBubble.prototype.supportsHide = function() {return true;}


var map;

function clearPropertySearchForm() {
	function clear(sel) {
		sel.value = 'All';
	}
	$$('#property_search select').each(clear);
	reloadPropertySearchForm();
	return false;
}

function reloadPropertySearchForm() {
	var params = {action: 'getsearchform'};
	function getSelect($el) {
		params[$el.id] = $el.value;
	}
	var url = '/Property?';
	$$('#property_search select').each (getSelect);
	new Ajax.Request ('/Property',
					  {method: 'post',
 					   parameters: params,
					   onSuccess: function (t) {
							  if (t.responseText) $('rentalSearchForm').update(t.responseText);
						  },
					   onFailure: function(){ alert('Something went wrong...') }
					  });
}

function loadMap() {
	if (GBrowserIsCompatible()) {
		_mPreferMetric=true;                                 //to make size sure for IE too
		map = new GMap2(document.getElementById("map") /*, {size:new GSize(300,300)}*/);
		map.setCenter(new GLatLng( 0,0), 9);
		map.addControl(new GLargeMapControl());
		map.addControl(new GMapTypeControl());
		map.addControl(new GScaleControl(300));

		bubble = new EBubble(map,
							 "/modules/Property/images/bubble.png",
							 /*
							 new GSize(130,184), // Image size
							 new GSize(96,96),   // content size
							 new GPoint(22,53),  // Top left corner of Image relative to Content
							 new GPoint(16,195), // Anchor point of image
							 */
							 new GSize(195,276), // Image size
							 new GSize(144,144),   // content size
							 new GPoint(33,80),  // Top left corner of Image relative to Content
							 new GPoint(24,292), // Anchor point of image
							 true				 // Don't close
							 );      
		populateMap(mapPoints());
		GEvent.addListener(map, "click", function(marker,point) {
				if (point) {
					bubble.hide();
				}
			});
	}
}

function populateMap(points, opt_options){
	var bounds = new GLatLngBounds();
	for (var i=0; i < points.length; i++) {
		points[i].marker = createMarker(points[i], points[i].infoWindow, points[i].propertyId);
		map.addOverlay(points[i].marker);
		bounds.extend(points[i]);
	}
	var p=30;
	var paddings = {top:p, right:p, bottom:p, left:p};
	map.showBounds(bounds,paddings); 
}

var property_id=0;
function createMarker(point,html,id) {
	//var marker = new GMarker(point);
	var markericon = new GIcon(G_DEFAULT_ICON,'/modules/Property/images/point.png');
	markericon.iconSize = new GSize(28,34);
	// markericon.shadow = null; // '/modules/Property/images/point_shadow.png';
	//var markericon = new GIcon(basemarker, '/point.gif');
	var marker = new GMarker(point, { icon: markericon });
	// === Open the EBubble instead of an Info Window ===
	GEvent.addListener(marker, "click", function() {
			var theId = id;
			bubble.openOnMarker(marker,html, function() {window.location='/Property/'+theId;}.bind(this));
        });
	return marker;
}

GMap2.prototype.showBounds = function(bounds_, opt_options){
  var opts = opt_options||{};
  opts.top = opt_options.top*1||0;
  opts.left = opt_options.left*1||0;
  opts.bottom = opt_options.bottom*1||0;
  opts.right = opt_options.right*1||0;
  opts.save = opt_options.save||true;
  opts.disableSetCenter = opt_options.disableSetCenter||false;
  var ty = this.getCurrentMapType();
  var port = this.getSize();
  if(!opts.disableSetCenter){
    var virtualPort = new GSize(port.width - opts.left - opts.right, 
                            port.height - opts.top - opts.bottom);
    this.setZoom(Math.min(13,Math.max (1, ty.getBoundsZoomLevel(bounds_, virtualPort))));
    var xOffs = (opts.left - opts.right)/2;
    var yOffs = (opts.top - opts.bottom)/2;
    var bPxCenter = this.fromLatLngToDivPixel(bounds_.getCenter());
    var newCenter = this.fromDivPixelToLatLng(new GPoint(bPxCenter.x-xOffs, bPxCenter.y-yOffs));
    this.setCenter(newCenter);
    if(opts.save)this.savePosition();
  }
  var portBounds = new GLatLngBounds();
  portBounds.extend(this.fromContainerPixelToLatLng(new GPoint(opts.left, port.height-opts.bottom)));
  portBounds.extend(this.fromContainerPixelToLatLng(new GPoint(port.width-opts.right, opts.top)));
  return portBounds;
}

Event.observe(window, 'load', loadMap);	
// Event.observe(window, 'load', addPropertyLinks);