Solved

'this.lightview' is null or not an object error in IE only, FF works fine

Posted on 2008-06-18
3
8,877 Views
Last Modified: 2013-12-08
Hi, I am having a problem with IE not behaving properly (surprise). I am getting an error in IE 6 & 7 but not in FireFox.

any help would be greatly appreciated. I am actually not the developer. I have someone doing it for me. I know a little js, but now very much. He is also stumped. If possible, please be specific in answering.

thanks so much for the help.

the error is:

Line: 15
Char: 1
Error: 'this.lightview' is null or not an object
Code: 0
URL: http://208.131.157.93/srx/Magna/promos/x.html

here is the code:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Magna Adds / Promotions</title>

<link rel="stylesheet" type="text/css" href="/lightview/css/lightview.css" />
<script type="text/javascript" src="/lightview/js/prototype.js"></script>
<script type="text/javascript" src="/lightview/js/scriptaculous.js?load=effects"></script>
<script type="text/javascript" src="/lightview/js/lightview.js"></script>

</head>

<!-- <body onload="Lightview.show({ href: 'y.html', rel: 'iframe', options: { width: 1024, height: 768 }});" > -->
<body
onload="Lightview.show({
  href: 'http://208.131.157.93/srx/Magna/promos/Magna/y.html',
  options: { width: 1024, height: 768 }});"
>

</body>
</html>
0
Comment
Question by:cafulford
  • 2
3 Comments
 

Author Comment

by:cafulford
ID: 21814300
Here are the js file code...thanks
prototype.js:
 

/*  Prototype JavaScript framework, version 1.6.0.2

 *  (c) 2005-2008 Sam Stephenson

 *

 *  Prototype is freely distributable under the terms of an MIT-style license.

 *  For details, see the Prototype web site: http://www.prototypejs.org/

 *

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

var Prototype = {

  Version: '1.6.0.2',
 

  Browser: {

    IE:     !!(window.attachEvent && !window.opera),

    Opera:  !!window.opera,

    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,

    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,

    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)

  },
 

  BrowserFeatures: {

    XPath: !!document.evaluate,

    ElementExtensions: !!window.HTMLElement,

    SpecificElementExtensions:

      document.createElement('div').__proto__ &&

      document.createElement('div').__proto__ !==

        document.createElement('form').__proto__

  },
 

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

  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
 

  emptyFunction: function() { },

  K: function(x) { return x }

};
 

if (Prototype.Browser.MobileSafari)

  Prototype.BrowserFeatures.SpecificElementExtensions = false;
 
 

/* Based on Alex Arnell's inheritance implementation. */

var Class = {

  create: function() {

    var parent = null, properties = $A(arguments);

    if (Object.isFunction(properties[0]))

      parent = properties.shift();
 

    function klass() {

      this.initialize.apply(this, arguments);

    }
 

    Object.extend(klass, Class.Methods);

    klass.superclass = parent;

    klass.subclasses = [];
 

    if (parent) {

      var subclass = function() { };

      subclass.prototype = parent.prototype;

      klass.prototype = new subclass;

      parent.subclasses.push(klass);

    }
 

    for (var i = 0; i < properties.length; i++)

      klass.addMethods(properties[i]);
 

    if (!klass.prototype.initialize)

      klass.prototype.initialize = Prototype.emptyFunction;
 

    klass.prototype.constructor = klass;
 

    return klass;

  }

};
 

Class.Methods = {

  addMethods: function(source) {

    var ancestor   = this.superclass && this.superclass.prototype;

    var properties = Object.keys(source);
 

    if (!Object.keys({ toString: true }).length)

      properties.push("toString", "valueOf");
 

    for (var i = 0, length = properties.length; i < length; i++) {

      var property = properties[i], value = source[property];

      if (ancestor && Object.isFunction(value) &&

          value.argumentNames().first() == "$super") {

        var method = value, value = Object.extend((function(m) {

          return function() { return ancestor[m].apply(this, arguments) };

        })(property).wrap(method), {

          valueOf:  function() { return method },

          toString: function() { return method.toString() }

        });

      }

      this.prototype[property] = value;

    }
 

    return this;

  }

};
 

var Abstract = { };
 

Object.extend = function(destination, source) {

  for (var property in source)

    destination[property] = source[property];

  return destination;

};
 

Object.extend(Object, {

  inspect: function(object) {

    try {

      if (Object.isUndefined(object)) return 'undefined';

      if (object === null) return 'null';

      return object.inspect ? object.inspect() : String(object);

    } catch (e) {

      if (e instanceof RangeError) return '...';

      throw e;

    }

  },
 

  toJSON: function(object) {

    var type = typeof object;

    switch (type) {

      case 'undefined':

      case 'function':

      case 'unknown': return;

      case 'boolean': return object.toString();

    }
 

    if (object === null) return 'null';

    if (object.toJSON) return object.toJSON();

    if (Object.isElement(object)) return;
 

    var results = [];

    for (var property in object) {

      var value = Object.toJSON(object[property]);

      if (!Object.isUndefined(value))

        results.push(property.toJSON() + ': ' + value);

    }
 

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

  },
 

  toQueryString: function(object) {

    return $H(object).toQueryString();

  },
 

  toHTML: function(object) {

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

  },
 

  keys: function(object) {

    var keys = [];

    for (var property in object)

      keys.push(property);

    return keys;

  },
 

  values: function(object) {

    var values = [];

    for (var property in object)

      values.push(object[property]);

    return values;

  },
 

  clone: function(object) {

    return Object.extend({ }, object);

  },
 

  isElement: function(object) {

    return object && object.nodeType == 1;

  },
 

  isArray: function(object) {

    return object != null && typeof object == "object" &&

      'splice' in object && 'join' in object;

  },
 

  isHash: function(object) {

    return object instanceof Hash;

  },
 

  isFunction: function(object) {

    return typeof object == "function";

  },
 

  isString: function(object) {

    return typeof object == "string";

  },
 

  isNumber: function(object) {

    return typeof object == "number";

  },
 

  isUndefined: function(object) {

    return typeof object == "undefined";

  }

});
 

Object.extend(Function.prototype, {

  argumentNames: function() {

    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");

    return names.length == 1 && !names[0] ? [] : names;

  },
 

  bind: function() {

    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;

    var __method = this, args = $A(arguments), object = args.shift();

    return function() {

      return __method.apply(object, args.concat($A(arguments)));

    }

  },
 

  bindAsEventListener: function() {

    var __method = this, args = $A(arguments), object = args.shift();

    return function(event) {

      return __method.apply(object, [event || window.event].concat(args));

    }

  },
 

  curry: function() {

    if (!arguments.length) return this;

    var __method = this, args = $A(arguments);

    return function() {

      return __method.apply(this, args.concat($A(arguments)));

    }

  },
 

  delay: function() {

    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;

    return window.setTimeout(function() {

      return __method.apply(__method, args);

    }, timeout);

  },
 

  wrap: function(wrapper) {

    var __method = this;

    return function() {

      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));

    }

  },
 

  methodize: function() {

    if (this._methodized) return this._methodized;

    var __method = this;

    return this._methodized = function() {

      return __method.apply(null, [this].concat($A(arguments)));

    };

  }

});
 

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

Date.prototype.toJSON = function() {

  return '"' + this.getUTCFullYear() + '-' +

    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +

    this.getUTCDate().toPaddedString(2) + 'T' +

    this.getUTCHours().toPaddedString(2) + ':' +

    this.getUTCMinutes().toPaddedString(2) + ':' +

    this.getUTCSeconds().toPaddedString(2) + 'Z"';

};
 

var Try = {

  these: function() {

    var returnValue;
 

    for (var i = 0, length = arguments.length; i < length; i++) {

      var lambda = arguments[i];

      try {

        returnValue = lambda();

        break;

      } catch (e) { }

    }
 

    return returnValue;

  }

};
 

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

RegExp.escape = function(str) {

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

};
 

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

var PeriodicalExecuter = Class.create({

  initialize: function(callback, frequency) {

    this.callback = callback;

    this.frequency = frequency;

    this.currentlyExecuting = false;
 

    this.registerCallback();

  },
 

  registerCallback: function() {

    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);

  },
 

  execute: function() {

    this.callback(this);

  },
 

  stop: function() {

    if (!this.timer) return;

    clearInterval(this.timer);

    this.timer = null;

  },
 

  onTimerEvent: function() {

    if (!this.currentlyExecuting) {

      try {

        this.currentlyExecuting = true;

        this.execute();

      } finally {

        this.currentlyExecuting = false;

      }

    }

  }

});

Object.extend(String, {

  interpret: function(value) {

    return value == null ? '' : String(value);

  },

  specialChar: {

    '\b': '\\b',

    '\t': '\\t',

    '\n': '\\n',

    '\f': '\\f',

    '\r': '\\r',

    '\\': '\\\\'

  }

});
 

Object.extend(String.prototype, {

  gsub: function(pattern, replacement) {

    var result = '', source = this, match;

    replacement = arguments.callee.prepareReplacement(replacement);
 

    while (source.length > 0) {

      if (match = source.match(pattern)) {

        result += source.slice(0, match.index);

        result += String.interpret(replacement(match));

        source  = source.slice(match.index + match[0].length);

      } else {

        result += source, source = '';

      }

    }

    return result;

  },
 

  sub: function(pattern, replacement, count) {

    replacement = this.gsub.prepareReplacement(replacement);

    count = Object.isUndefined(count) ? 1 : count;
 

    return this.gsub(pattern, function(match) {

      if (--count < 0) return match[0];

      return replacement(match);

    });

  },
 

  scan: function(pattern, iterator) {

    this.gsub(pattern, iterator);

    return String(this);

  },
 

  truncate: function(length, truncation) {

    length = length || 30;

    truncation = Object.isUndefined(truncation) ? '...' : truncation;

    return this.length > length ?

      this.slice(0, length - truncation.length) + truncation : String(this);

  },
 

  strip: function() {

    return this.replace(/^\s+/, '').replace(/\s+$/, '');

  },
 

  stripTags: function() {

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

  },
 

  stripScripts: function() {

    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');

  },
 

  extractScripts: function() {

    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');

    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');

    return (this.match(matchAll) || []).map(function(scriptTag) {

      return (scriptTag.match(matchOne) || ['', ''])[1];

    });

  },
 

  evalScripts: function() {

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

  },
 

  escapeHTML: function() {

    var self = arguments.callee;

    self.text.data = this;

    return self.div.innerHTML;

  },
 

  unescapeHTML: function() {

    var div = new Element('div');

    div.innerHTML = this.stripTags();

    return div.childNodes[0] ? (div.childNodes.length > 1 ?

      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :

      div.childNodes[0].nodeValue) : '';

  },
 

  toQueryParams: function(separator) {

    var match = this.strip().match(/([^?#]*)(#.*)?$/);

    if (!match) return { };
 

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {

      if ((pair = pair.split('='))[0]) {

        var key = decodeURIComponent(pair.shift());

        var value = pair.length > 1 ? pair.join('=') : pair[0];

        if (value != undefined) value = decodeURIComponent(value);
 

        if (key in hash) {

          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];

          hash[key].push(value);

        }

        else hash[key] = value;

      }

      return hash;

    });

  },
 

  toArray: function() {

    return this.split('');

  },
 

  succ: function() {

    return this.slice(0, this.length - 1) +

      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);

  },
 

  times: function(count) {

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

  },
 

  camelize: function() {

    var parts = this.split('-'), len = parts.length;

    if (len == 1) return parts[0];
 

    var camelized = this.charAt(0) == '-'

      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)

      : parts[0];
 

    for (var i = 1; i < len; i++)

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

    return camelized;

  },
 

  capitalize: function() {

    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();

  },
 

  underscore: function() {

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

  },
 

  dasherize: function() {

    return this.gsub(/_/,'-');

  },
 

  inspect: function(useDoubleQuotes) {

    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {

      var character = String.specialChar[match[0]];

      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);

    });

    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';

    return "'" + escapedString.replace(/'/g, '\\\'') + "'";

  },
 

  toJSON: function() {

    return this.inspect(true);

  },
 

  unfilterJSON: function(filter) {

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

  },
 

  isJSON: function() {

    var str = this;

    if (str.blank()) return false;

    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');

    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);

  },
 

  evalJSON: function(sanitize) {

    var json = this.unfilterJSON();

    try {

      if (!sanitize || json.isJSON()) return eval('(' + json + ')');

    } catch (e) { }

    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());

  },
 

  include: function(pattern) {

    return this.indexOf(pattern) > -1;

  },
 

  startsWith: function(pattern) {

    return this.indexOf(pattern) === 0;

  },
 

  endsWith: function(pattern) {

    var d = this.length - pattern.length;

    return d >= 0 && this.lastIndexOf(pattern) === d;

  },
 

  empty: function() {

    return this == '';

  },
 

  blank: function() {

    return /^\s*$/.test(this);

  },
 

  interpolate: function(object, pattern) {

    return new Template(this, pattern).evaluate(object);

  }

});
 

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {

  escapeHTML: function() {

    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');

  },

  unescapeHTML: function() {

    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');

  }

});
 

String.prototype.gsub.prepareReplacement = function(replacement) {

  if (Object.isFunction(replacement)) return replacement;

  var template = new Template(replacement);

  return function(match) { return template.evaluate(match) };

};
 

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

Object.extend(String.prototype.escapeHTML, {

  div:  document.createElement('div'),

  text: document.createTextNode('')

});
 

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

var Template = Class.create({

  initialize: function(template, pattern) {

    this.template = template.toString();

    this.pattern = pattern || Template.Pattern;

  },
 

  evaluate: function(object) {

    if (Object.isFunction(object.toTemplateReplacements))

      object = object.toTemplateReplacements();
 

    return this.template.gsub(this.pattern, function(match) {

      if (object == null) return '';
 

      var before = match[1] || '';

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

      var ctx = object, expr = match[3];

      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;

      match = pattern.exec(expr);

      if (match == null) return before;
 

      while (match != null) {

        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];

        ctx = ctx[comp];

        if (null == ctx || '' == match[3]) break;

        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);

        match = pattern.exec(expr);

      }
 

      return before + String.interpret(ctx);

    });

  }

});

Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
 

var $break = { };
 

var Enumerable = {

  each: function(iterator, context) {

    var index = 0;

    iterator = iterator.bind(context);

    try {

      this._each(function(value) {

        iterator(value, index++);

      });

    } catch (e) {

      if (e != $break) throw e;

    }

    return this;

  },
 

  eachSlice: function(number, iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var index = -number, slices = [], array = this.toArray();

    while ((index += number) < array.length)

      slices.push(array.slice(index, index+number));

    return slices.collect(iterator, context);

  },
 

  all: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var result = true;

    this.each(function(value, index) {

      result = result && !!iterator(value, index);

      if (!result) throw $break;

    });

    return result;

  },
 

  any: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var result = false;

    this.each(function(value, index) {

      if (result = !!iterator(value, index))

        throw $break;

    });

    return result;

  },
 

  collect: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var results = [];

    this.each(function(value, index) {

      results.push(iterator(value, index));

    });

    return results;

  },
 

  detect: function(iterator, context) {

    iterator = iterator.bind(context);

    var result;

    this.each(function(value, index) {

      if (iterator(value, index)) {

        result = value;

        throw $break;

      }

    });

    return result;

  },
 

  findAll: function(iterator, context) {

    iterator = iterator.bind(context);

    var results = [];

    this.each(function(value, index) {

      if (iterator(value, index))

        results.push(value);

    });

    return results;

  },
 

  grep: function(filter, iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var results = [];
 

    if (Object.isString(filter))

      filter = new RegExp(filter);
 

    this.each(function(value, index) {

      if (filter.match(value))

        results.push(iterator(value, index));

    });

    return results;

  },
 

  include: function(object) {

    if (Object.isFunction(this.indexOf))

      if (this.indexOf(object) != -1) return true;
 

    var found = false;

    this.each(function(value) {

      if (value == object) {

        found = true;

        throw $break;

      }

    });

    return found;

  },
 

  inGroupsOf: function(number, fillWith) {

    fillWith = Object.isUndefined(fillWith) ? null : fillWith;

    return this.eachSlice(number, function(slice) {

      while(slice.length < number) slice.push(fillWith);

      return slice;

    });

  },
 

  inject: function(memo, iterator, context) {

    iterator = iterator.bind(context);

    this.each(function(value, index) {

      memo = iterator(memo, value, index);

    });

    return memo;

  },
 

  invoke: function(method) {

    var args = $A(arguments).slice(1);

    return this.map(function(value) {

      return value[method].apply(value, args);

    });

  },
 

  max: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var result;

    this.each(function(value, index) {

      value = iterator(value, index);

      if (result == null || value >= result)

        result = value;

    });

    return result;

  },
 

  min: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var result;

    this.each(function(value, index) {

      value = iterator(value, index);

      if (result == null || value < result)

        result = value;

    });

    return result;

  },
 

  partition: function(iterator, context) {

    iterator = iterator ? iterator.bind(context) : Prototype.K;

    var trues = [], falses = [];

    this.each(function(value, index) {

      (iterator(value, index) ?

        trues : falses).push(value);

    });

    return [trues, falses];

  },
 

  pluck: function(property) {

    var results = [];

    this.each(function(value) {

      results.push(value[property]);

    });

    return results;

  },
 

  reject: function(iterator, context) {

    iterator = iterator.bind(context);

    var results = [];

    this.each(function(value, index) {

      if (!iterator(value, index))

        results.push(value);

    });

    return results;

  },
 

  sortBy: function(iterator, context) {

    iterator = iterator.bind(context);

    return this.map(function(value, index) {

      return {value: value, criteria: iterator(value, index)};

    }).sort(function(left, right) {

      var a = left.criteria, b = right.criteria;

      return a < b ? -1 : a > b ? 1 : 0;

    }).pluck('value');

  },
 

  toArray: function() {

    return this.map();

  },
 

  zip: function() {

    var iterator = Prototype.K, args = $A(arguments);

    if (Object.isFunction(args.last()))

      iterator = args.pop();
 

    var collections = [this].concat(args).map($A);

    return this.map(function(value, index) {

      return iterator(collections.pluck(index));

    });

  },
 

  size: function() {

    return this.toArray().length;

  },
 

  inspect: function() {

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

  }

};
 

Object.extend(Enumerable, {

  map:     Enumerable.collect,

  find:    Enumerable.detect,

  select:  Enumerable.findAll,

  filter:  Enumerable.findAll,

  member:  Enumerable.include,

  entries: Enumerable.toArray,

  every:   Enumerable.all,

  some:    Enumerable.any

});

function $A(iterable) {

  if (!iterable) return [];

  if (iterable.toArray) return iterable.toArray();

  var length = iterable.length || 0, results = new Array(length);

  while (length--) results[length] = iterable[length];

  return results;

}
 

if (Prototype.Browser.WebKit) {

  $A = function(iterable) {

    if (!iterable) return [];

    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&

        iterable.toArray) return iterable.toArray();

    var length = iterable.length || 0, results = new Array(length);

    while (length--) results[length] = iterable[length];

    return results;

  };

}
 

Array.from = $A;
 

Object.extend(Array.prototype, Enumerable);
 

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

Object.extend(Array.prototype, {

  _each: function(iterator) {

    for (var i = 0, length = this.length; i < length; i++)

      iterator(this[i]);

  },
 

  clear: function() {

    this.length = 0;

    return this;

  },
 

  first: function() {

    return this[0];

  },
 

  last: function() {

    return this[this.length - 1];

  },
 

  compact: function() {

    return this.select(function(value) {

      return value != null;

    });

  },
 

  flatten: function() {

    return this.inject([], function(array, value) {

      return array.concat(Object.isArray(value) ?

        value.flatten() : [value]);

    });

  },
 

  without: function() {

    var values = $A(arguments);

    return this.select(function(value) {

      return !values.include(value);

    });

  },
 

  reverse: function(inline) {

    return (inline !== false ? this : this.toArray())._reverse();

  },
 

  reduce: function() {

    return this.length > 1 ? this : this[0];

  },
 

  uniq: function(sorted) {

    return this.inject([], function(array, value, index) {

      if (0 == index || (sorted ? array.last() != value : !array.include(value)))

        array.push(value);

      return array;

    });

  },
 

  intersect: function(array) {

    return this.uniq().findAll(function(item) {

      return array.detect(function(value) { return item === value });

    });

  },
 

  clone: function() {

    return [].concat(this);

  },
 

  size: function() {

    return this.length;

  },
 

  inspect: function() {

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

  },
 

  toJSON: function() {

    var results = [];

    this.each(function(object) {

      var value = Object.toJSON(object);

      if (!Object.isUndefined(value)) results.push(value);

    });

    return '[' + results.join(', ') + ']';

  }

});
 

// use native browser JS 1.6 implementation if available

if (Object.isFunction(Array.prototype.forEach))

  Array.prototype._each = Array.prototype.forEach;
 

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {

  i || (i = 0);

  var length = this.length;

  if (i < 0) i = length + i;

  for (; i < length; i++)

    if (this[i] === item) return i;

  return -1;

};
 

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {

  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;

  var n = this.slice(0, i).reverse().indexOf(item);

  return (n < 0) ? n : i - n - 1;

};
 

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

function $w(string) {

  if (!Object.isString(string)) return [];

  string = string.strip();

  return string ? string.split(/\s+/) : [];

}
 

if (Prototype.Browser.Opera){

  Array.prototype.concat = function() {

    var array = [];

    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);

    for (var i = 0, length = arguments.length; i < length; i++) {

      if (Object.isArray(arguments[i])) {

        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)

          array.push(arguments[i][j]);

      } else {

        array.push(arguments[i]);

      }

    }

    return array;

  };

}

Object.extend(Number.prototype, {

  toColorPart: function() {

    return this.toPaddedString(2, 16);

  },
 

  succ: function() {

    return this + 1;

  },
 

  times: function(iterator) {

    $R(0, this, true).each(iterator);

    return this;

  },
 

  toPaddedString: function(length, radix) {

    var string = this.toString(radix || 10);

    return '0'.times(length - string.length) + string;

  },
 

  toJSON: function() {

    return isFinite(this) ? this.toString() : 'null';

  }

});
 

$w('abs round ceil floor').each(function(method){

  Number.prototype[method] = Math[method].methodize();

});

function $H(object) {

  return new Hash(object);

};
 

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

  function toQueryPair(key, value) {

    if (Object.isUndefined(value)) return key;

    return key + '=' + encodeURIComponent(String.interpret(value));

  }
 

  return {

    initialize: function(object) {

      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);

    },
 

    _each: function(iterator) {

      for (var key in this._object) {

        var value = this._object[key], pair = [key, value];

        pair.key = key;

        pair.value = value;

        iterator(pair);

      }

    },
 

    set: function(key, value) {

      return this._object[key] = value;

    },
 

    get: function(key) {

      return this._object[key];

    },
 

    unset: function(key) {

      var value = this._object[key];

      delete this._object[key];

      return value;

    },
 

    toObject: function() {

      return Object.clone(this._object);

    },
 

    keys: function() {

      return this.pluck('key');

    },
 

    values: function() {

      return this.pluck('value');

    },
 

    index: function(value) {

      var match = this.detect(function(pair) {

        return pair.value === value;

      });

      return match && match.key;

    },
 

    merge: function(object) {

      return this.clone().update(object);

    },
 

    update: function(object) {

      return new Hash(object).inject(this, function(result, pair) {

        result.set(pair.key, pair.value);

        return result;

      });

    },
 

    toQueryString: function() {

      return this.map(function(pair) {

        var key = encodeURIComponent(pair.key), values = pair.value;
 

        if (values && typeof values == 'object') {

          if (Object.isArray(values))

            return values.map(toQueryPair.curry(key)).join('&');

        }

        return toQueryPair(key, values);

      }).join('&');

    },
 

    inspect: function() {

      return '#<Hash:{' + this.map(function(pair) {

        return pair.map(Object.inspect).join(': ');

      }).join(', ') + '}>';

    },
 

    toJSON: function() {

      return Object.toJSON(this.toObject());

    },
 

    clone: function() {

      return new Hash(this);

    }

  }

})());
 

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;

Hash.from = $H;

var ObjectRange = Class.create(Enumerable, {

  initialize: function(start, end, exclusive) {

    this.start = start;

    this.end = end;

    this.exclusive = exclusive;

  },
 

  _each: function(iterator) {

    var value = this.start;

    while (this.include(value)) {

      iterator(value);

      value = value.succ();

    }

  },
 

  include: function(value) {

    if (value < this.start)

      return false;

    if (this.exclusive)

      return value < this.end;

    return value <= this.end;

  }

});
 

var $R = function(start, end, exclusive) {

  return new ObjectRange(start, end, exclusive);

};
 

var Ajax = {

  getTransport: function() {

    return Try.these(

      function() {return new XMLHttpRequest()},

      function() {return new ActiveXObject('Msxml2.XMLHTTP')},

      function() {return new ActiveXObject('Microsoft.XMLHTTP')}

    ) || false;

  },
 

  activeRequestCount: 0

};
 

Ajax.Responders = {

  responders: [],
 

  _each: function(iterator) {

    this.responders._each(iterator);

  },
 

  register: function(responder) {

    if (!this.include(responder))

      this.responders.push(responder);

  },
 

  unregister: function(responder) {

    this.responders = this.responders.without(responder);

  },
 

  dispatch: function(callback, request, transport, json) {

    this.each(function(responder) {

      if (Object.isFunction(responder[callback])) {

        try {

          responder[callback].apply(responder, [request, transport, json]);

        } catch (e) { }

      }

    });

  }

};
 

Object.extend(Ajax.Responders, Enumerable);
 

Ajax.Responders.register({

  onCreate:   function() { Ajax.activeRequestCount++ },

  onComplete: function() { Ajax.activeRequestCount-- }

});
 

Ajax.Base = Class.create({

  initialize: function(options) {

    this.options = {

      method:       'post',

      asynchronous: true,

      contentType:  'application/x-www-form-urlencoded',

      encoding:     'UTF-8',

      parameters:   '',

      evalJSON:     true,

      evalJS:       true

    };

    Object.extend(this.options, options || { });
 

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

    if (Object.isString(this.options.parameters))

      this.options.parameters = this.options.parameters.toQueryParams();

    else if (Object.isHash(this.options.parameters))

      this.options.parameters = this.options.parameters.toObject();

  }

});
 

Ajax.Request = Class.create(Ajax.Base, {

  _complete: false,
 

  initialize: function($super, url, options) {

    $super(options);

    this.transport = Ajax.getTransport();

    this.request(url);

  },
 

  request: function(url) {

    this.url = url;

    this.method = this.options.method;

    var params = Object.clone(this.options.parameters);
 

    if (!['get', 'post'].include(this.method)) {

      // simulate other verbs over post

      params['_method'] = this.method;

      this.method = 'post';

    }
 

    this.parameters = params;
 

    if (params = Object.toQueryString(params)) {

      // when GET, append parameters to URL

      if (this.method == 'get')

        this.url += (this.url.include('?') ? '&' : '?') + params;

      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))

        params += '&_=';

    }
 

    try {

      var response = new Ajax.Response(this);

      if (this.options.onCreate) this.options.onCreate(response);

      Ajax.Responders.dispatch('onCreate', this, response);
 

      this.transport.open(this.method.toUpperCase(), this.url,

        this.options.asynchronous);
 

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

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

      this.setRequestHeaders();
 

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

      this.transport.send(this.body);
 

      /* Force Firefox to handle ready state 4 for synchronous requests */

      if (!this.options.asynchronous && this.transport.overrideMimeType)

        this.onStateChange();
 

    }

    catch (e) {

      this.dispatchException(e);

    }

  },
 

  onStateChange: function() {

    var readyState = this.transport.readyState;

    if (readyState > 1 && !((readyState == 4) && this._complete))

      this.respondToReadyState(this.transport.readyState);

  },
 

  setRequestHeaders: function() {

    var headers = {

      'X-Requested-With': 'XMLHttpRequest',

      'X-Prototype-Version': Prototype.Version,

      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'

    };
 

    if (this.method == 'post') {

      headers['Content-type'] = this.options.contentType +

        (this.options.encoding ? '; charset=' + this.options.encoding : '');
 

      /* Force "Connection: close" for older Mozilla browsers to work

       * around a bug where XMLHttpRequest sends an incorrect

       * Content-length header. See Mozilla Bugzilla #246651.

       */

      if (this.transport.overrideMimeType &&

          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)

            headers['Connection'] = 'close';

    }
 

    // user-defined headers

    if (typeof this.options.requestHeaders == 'object') {

      var extras = this.options.requestHeaders;
 

      if (Object.isFunction(extras.push))

        for (var i = 0, length = extras.length; i < length; i += 2)

          headers[extras[i]] = extras[i+1];

      else

        $H(extras).each(function(pair) { headers[pair.key] = pair.value });

    }
 

    for (var name in headers)

      this.transport.setRequestHeader(name, headers[name]);

  },
 

  success: function() {

    var status = this.getStatus();

    return !status || (status >= 200 && status < 300);

  },
 

  getStatus: function() {

    try {

      return this.transport.status || 0;

    } catch (e) { return 0 }

  },
 

  respondToReadyState: function(readyState) {

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

    if (state == 'Complete') {

      try {

        this._complete = true;

        (this.options['on' + response.status]

         || this.options['on' + (this.success() ? 'Success' : 'Failure')]

         || Prototype.emptyFunction)(response, response.headerJSON);

      } catch (e) {

        this.dispatchException(e);

      }
 

      var contentType = response.getHeader('Content-type');

      if (this.options.evalJS == 'force'

          || (this.options.evalJS && this.isSameOrigin() && contentType

          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))

        this.evalResponse();

    }
 

    try {

      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);

      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);

    } catch (e) {

      this.dispatchException(e);

    }
 

    if (state == 'Complete') {

      // avoid memory leak in MSIE: clean up

      this.transport.onreadystatechange = Prototype.emptyFunction;

    }

  },
 

  isSameOrigin: function() {

    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);

    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({

      protocol: location.protocol,

      domain: document.domain,

      port: location.port ? ':' + location.port : ''

    }));

  },
 

  getHeader: function(name) {

    try {

      return this.transport.getResponseHeader(name) || null;

    } catch (e) { return null }

  },
 

  evalResponse: function() {

    try {

      return eval((this.transport.responseText || '').unfilterJSON());

    } catch (e) {

      this.dispatchException(e);

    }

  },
 

  dispatchException: function(exception) {

    (this.options.onException || Prototype.emptyFunction)(this, exception);

    Ajax.Responders.dispatch('onException', this, exception);

  }

});
 

Ajax.Request.Events =

  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
 

Ajax.Response = Class.create({

  initialize: function(request){

    this.request = request;

    var transport  = this.transport  = request.transport,

        readyState = this.readyState = transport.readyState;
 

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {

      this.status       = this.getStatus();

      this.statusText   = this.getStatusText();

      this.responseText = String.interpret(transport.responseText);

      this.headerJSON   = this._getHeaderJSON();

    }
 

    if(readyState == 4) {

      var xml = transport.responseXML;

      this.responseXML  = Object.isUndefined(xml) ? null : xml;

      this.responseJSON = this._getResponseJSON();

    }

  },
 

  status:      0,

  statusText: '',
 

  getStatus: Ajax.Request.prototype.getStatus,
 

  getStatusText: function() {

    try {

      return this.transport.statusText || '';

    } catch (e) { return '' }

  },
 

  getHeader: Ajax.Request.prototype.getHeader,
 

  getAllHeaders: function() {

    try {

      return this.getAllResponseHeaders();

    } catch (e) { return null }

  },
 

  getResponseHeader: function(name) {

    return this.transport.getResponseHeader(name);

  },
 

  getAllResponseHeaders: function() {

    return this.transport.getAllResponseHeaders();

  },
 

  _getHeaderJSON: function() {

    var json = this.getHeader('X-JSON');

    if (!json) return null;

    json = decodeURIComponent(escape(json));

    try {

      return json.evalJSON(this.request.options.sanitizeJSON ||

        !this.request.isSameOrigin());

    } catch (e) {

      this.request.dispatchException(e);

    }

  },
 

  _getResponseJSON: function() {

    var options = this.request.options;

    if (!options.evalJSON || (options.evalJSON != 'force' &&

      !(this.getHeader('Content-type') || '').include('application/json')) ||

        this.responseText.blank())

          return null;

    try {

      return this.responseText.evalJSON(options.sanitizeJSON ||

        !this.request.isSameOrigin());

    } catch (e) {

      this.request.dispatchException(e);

    }

  }

});
 

Ajax.Updater = Class.create(Ajax.Request, {

  initialize: function($super, container, url, options) {

    this.container = {

      success: (container.success || container),

      failure: (container.failure || (container.success ? null : container))

    };
 

    options = Object.clone(options);

    var onComplete = options.onComplete;

    options.onComplete = (function(response, json) {

      this.updateContent(response.responseText);

      if (Object.isFunction(onComplete)) onComplete(response, json);

    }).bind(this);
 

    $super(url, options);

  },
 

  updateContent: function(responseText) {

    var receiver = this.container[this.success() ? 'success' : 'failure'],

        options = this.options;
 

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

    if (receiver = $(receiver)) {

      if (options.insertion) {

        if (Object.isString(options.insertion)) {

          var insertion = { }; insertion[options.insertion] = responseText;

          receiver.insert(insertion);

        }

        else options.insertion(receiver, responseText);

      }

      else receiver.update(responseText);

    }

  }

});
 

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {

  initialize: function($super, container, url, options) {

    $super(options);

    this.onComplete = this.options.onComplete;
 

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

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

    this.updater = { };

    this.container = container;

    this.url = url;
 

    this.start();

  },
 

  start: function() {

    this.options.onComplete = this.updateComplete.bind(this);

    this.onTimerEvent();

  },
 

  stop: function() {

    this.updater.options.onComplete = undefined;

    clearTimeout(this.timer);

    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);

  },
 

  updateComplete: function(response) {

    if (this.options.decay) {

      this.decay = (response.responseText == this.lastText ?

        this.decay * this.options.decay : 1);
 

      this.lastText = response.responseText;

    }

    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);

  },
 

  onTimerEvent: function() {

    this.updater = new Ajax.Updater(this.container, this.url, this.options);

  }

});

function $(element) {

  if (arguments.length > 1) {

    for (var i = 0, elements = [], length = arguments.length; i < length; i++)

      elements.push($(arguments[i]));

    return elements;

  }

  if (Object.isString(element))

    element = document.getElementById(element);

  return Element.extend(element);

}
 

if (Prototype.BrowserFeatures.XPath) {

  document._getElementsByXPath = function(expression, parentElement) {

    var results = [];

    var query = document.evaluate(expression, $(parentElement) || document,

      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);

    for (var i = 0, length = query.snapshotLength; i < length; i++)

      results.push(Element.extend(query.snapshotItem(i)));

    return results;

  };

}
 

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

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

if (!Node.ELEMENT_NODE) {

  // DOM level 2 ECMAScript Language Binding

  Object.extend(Node, {

    ELEMENT_NODE: 1,

    ATTRIBUTE_NODE: 2,

    TEXT_NODE: 3,

    CDATA_SECTION_NODE: 4,

    ENTITY_REFERENCE_NODE: 5,

    ENTITY_NODE: 6,

    PROCESSING_INSTRUCTION_NODE: 7,

    COMMENT_NODE: 8,

    DOCUMENT_NODE: 9,

    DOCUMENT_TYPE_NODE: 10,

    DOCUMENT_FRAGMENT_NODE: 11,

    NOTATION_NODE: 12

  });

}
 

(function() {

  var element = this.Element;

  this.Element = function(tagName, attributes) {

    attributes = attributes || { };

    tagName = tagName.toLowerCase();

    var cache = Element.cache;

    if (Prototype.Browser.IE && attributes.name) {

      tagName = '<' + tagName + ' name="' + attributes.name + '">';

      delete attributes.name;

      return Element.writeAttribute(document.createElement(tagName), attributes);

    }

    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));

    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);

  };

  Object.extend(this.Element, element || { });

}).call(window);
 

Element.cache = { };
 

Element.Methods = {

  visible: function(element) {

    return $(element).style.display != 'none';

  },
 

  toggle: function(element) {

    element = $(element);

    Element[Element.visible(element) ? 'hide' : 'show'](element);

    return element;

  },
 

  hide: function(element) {

    $(element).style.display = 'none';

    return element;

  },
 

  show: function(element) {

    $(element).style.display = '';

    return element;

  },
 

  remove: function(element) {

    element = $(element);

    element.parentNode.removeChild(element);

    return element;

  },
 

  update: function(element, content) {

    element = $(element);

    if (content && content.toElement) content = content.toElement();

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

    content = Object.toHTML(content);

    element.innerHTML = content.stripScripts();

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

    return element;

  },
 

  replace: function(element, content) {

    element = $(element);

    if (content && content.toElement) content = content.toElement();

    else if (!Object.isElement(content)) {

      content = Object.toHTML(content);

      var range = element.ownerDocument.createRange();

      range.selectNode(element);

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

      content = range.createContextualFragment(content.stripScripts());

    }

    element.parentNode.replaceChild(content, element);

    return element;

  },
 

  insert: function(element, insertions) {

    element = $(element);
 

    if (Object.isString(insertions) || Object.isNumber(insertions) ||

        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))

          insertions = {bottom:insertions};
 

    var content, insert, tagName, childNodes;
 

    for (var position in insertions) {

      content  = insertions[position];

      position = position.toLowerCase();

      insert = Element._insertionTranslations[position];
 

      if (content && content.toElement) content = content.toElement();

      if (Object.isElement(content)) {

        insert(element, content);

        continue;

      }
 

      content = Object.toHTML(content);
 

      tagName = ((position == 'before' || position == 'after')

        ? element.parentNode : element).tagName.toUpperCase();
 

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

      if (position == 'top' || position == 'after') childNodes.reverse();

      childNodes.each(insert.curry(element));
 

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

    }
 

    return element;

  },
 

  wrap: function(element, wrapper, attributes) {

    element = $(element);

    if (Object.isElement(wrapper))

      $(wrapper).writeAttribute(attributes || { });

    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);

    else wrapper = new Element('div', wrapper);

    if (element.parentNode)

      element.parentNode.replaceChild(wrapper, element);

    wrapper.appendChild(element);

    return wrapper;

  },
 

  inspect: function(element) {

    element = $(element);

    var result = '<' + element.tagName.toLowerCase();

    $H({'id': 'id', 'className': 'class'}).each(function(pair) {

      var property = pair.first(), attribute = pair.last();

      var value = (element[property] || '').toString();

      if (value) result += ' ' + attribute + '=' + value.inspect(true);

    });

    return result + '>';

  },
 

  recursivelyCollect: function(element, property) {

    element = $(element);

    var elements = [];

    while (element = element[property])

      if (element.nodeType == 1)

        elements.push(Element.extend(element));

    return elements;

  },
 

  ancestors: function(element) {

    return $(element).recursivelyCollect('parentNode');

  },
 

  descendants: function(element) {

    return $(element).select("*");

  },
 

  firstDescendant: function(element) {

    element = $(element).firstChild;

    while (element && element.nodeType != 1) element = element.nextSibling;

    return $(element);

  },
 

  immediateDescendants: function(element) {

    if (!(element = $(element).firstChild)) return [];

    while (element && element.nodeType != 1) element = element.nextSibling;

    if (element) return [element].concat($(element).nextSiblings());

    return [];

  },
 

  previousSiblings: function(element) {

    return $(element).recursivelyCollect('previousSibling');

  },
 

  nextSiblings: function(element) {

    return $(element).recursivelyCollect('nextSibling');

  },
 

  siblings: function(element) {

    element = $(element);

    return element.previousSiblings().reverse().concat(element.nextSiblings());

  },
 

  match: function(element, selector) {

    if (Object.isString(selector))

      selector = new Selector(selector);

    return selector.match($(element));

  },
 

  up: function(element, expression, index) {

    element = $(element);

    if (arguments.length == 1) return $(element.parentNode);

    var ancestors = element.ancestors();

    return Object.isNumber(expression) ? ancestors[expression] :

      Selector.findElement(ancestors, expression, index);

  },
 

  down: function(element, expression, index) {

    element = $(element);

    if (arguments.length == 1) return element.firstDescendant();

    return Object.isNumber(expression) ? element.descendants()[expression] :

      element.select(expression)[index || 0];

  },
 

  previous: function(element, expression, index) {

    element = $(element);

    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));

    var previousSiblings = element.previousSiblings();

    return Object.isNumber(expression) ? previousSiblings[expression] :

      Selector.findElement(previousSiblings, expression, index);

  },
 

  next: function(element, expression, index) {

    element = $(element);

    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));

    var nextSiblings = element.nextSiblings();

    return Object.isNumber(expression) ? nextSiblings[expression] :

      Selector.findElement(nextSiblings, expression, index);

  },
 

  select: function() {

    var args = $A(arguments), element = $(args.shift());

    return Selector.findChildElements(element, args);

  },
 

  adjacent: function() {

    var args = $A(arguments), element = $(args.shift());

    return Selector.findChildElements(element.parentNode, args).without(element);

  },
 

  identify: function(element) {

    element = $(element);

    var id = element.readAttribute('id'), self = arguments.callee;

    if (id) return id;

    do { id = 'anonymous_element_' + self.counter++ } while ($(id));

    element.writeAttribute('id', id);

    return id;

  },
 

  readAttribute: function(element, name) {

    element = $(element);

    if (Prototype.Browser.IE) {

      var t = Element._attributeTranslations.read;

      if (t.values[name]) return t.values[name](element, name);

      if (t.names[name]) name = t.names[name];

      if (name.include(':')) {

        return (!element.attributes || !element.attributes[name]) ? null :

         element.attributes[name].value;

      }

    }

    return element.getAttribute(name);

  },
 

  writeAttribute: function(element, name, value) {

    element = $(element);

    var attributes = { }, t = Element._attributeTranslations.write;
 

    if (typeof name == 'object') attributes = name;

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

    for (var attr in attributes) {

      name = t.names[attr] || attr;

      value = attributes[attr];

      if (t.values[attr]) name = t.values[attr](element, value);

      if (value === false || value === null)

        element.removeAttribute(name);

      else if (value === true)

        element.setAttribute(name, name);

      else element.setAttribute(name, value);

    }

    return element;

  },
 

  getHeight: function(element) {

    return $(element).getDimensions().height;

  },
 

  getWidth: function(element) {

    return $(element).getDimensions().width;

  },
 

  classNames: function(element) {

    return new Element.ClassNames(element);

  },
 

  hasClassName: function(element, className) {

    if (!(element = $(element))) return;

    var elementClassName = element.className;

    return (elementClassName.length > 0 && (elementClassName == className ||

      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));

  },
 

  addClassName: function(element, className) {

    if (!(element = $(element))) return;

    if (!element.hasClassName(className))

      element.className += (element.className ? ' ' : '') + className;

    return element;

  },
 

  removeClassName: function(element, className) {

    if (!(element = $(element))) return;

    element.className = element.className.replace(

      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();

    return element;

  },
 

  toggleClassName: function(element, className) {

    if (!(element = $(element))) return;

    return element[element.hasClassName(className) ?

      'removeClassName' : 'addClassName'](className);

  },
 

  // removes whitespace-only text node children

  cleanWhitespace: function(element) {

    element = $(element);

    var node = element.firstChild;

    while (node) {

      var nextNode = node.nextSibling;

      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))

        element.removeChild(node);

      node = nextNode;

    }

    return element;

  },
 

  empty: function(element) {

    return $(element).innerHTML.blank();

  },
 

  descendantOf: function(element, ancestor) {

    element = $(element), ancestor = $(ancestor);

    var originalAncestor = ancestor;
 

    if (element.compareDocumentPosition)

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

    if (element.sourceIndex && !Prototype.Browser.Opera) {

      var e = element.sourceIndex, a = ancestor.sourceIndex,

       nextAncestor = ancestor.nextSibling;

      if (!nextAncestor) {

        do { ancestor = ancestor.parentNode; }

        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);

      }

      if (nextAncestor && nextAncestor.sourceIndex)

       return (e > a && e < nextAncestor.sourceIndex);

    }
 

    while (element = element.parentNode)

      if (element == originalAncestor) return true;

    return false;

  },
 

  scrollTo: function(element) {

    element = $(element);

    var pos = element.cumulativeOffset();

    window.scrollTo(pos[0], pos[1]);

    return element;

  },
 

  getStyle: function(element, style) {

    element = $(element);

    style = style == 'float' ? 'cssFloat' : style.camelize();

    var value = element.style[style];

    if (!value) {

      var css = document.defaultView.getComputedStyle(element, null);

      value = css ? css[style] : null;

    }

    if (style == 'opacity') return value ? parseFloat(value) : 1.0;

    return value == 'auto' ? null : value;

  },
 

  getOpacity: function(element) {

    return $(element).getStyle('opacity');

  },
 

  setStyle: function(element, styles) {

    element = $(element);

    var elementStyle = element.style, match;

    if (Object.isString(styles)) {

      element.style.cssText += ';' + styles;

      return styles.include('opacity') ?

        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;

    }

    for (var property in styles)

      if (property == 'opacity') element.setOpacity(styles[property]);

      else

        elementStyle[(property == 'float' || property == 'cssFloat') ?

          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :

            property] = styles[property];
 

    return element;

  },
 

  setOpacity: function(element, value) {

    element = $(element);

    element.style.opacity = (value == 1 || value === '') ? '' :

      (value < 0.00001) ? 0 : value;

    return element;

  },
 

  getDimensions: function(element) {

    element = $(element);

    var display = $(element).getStyle('display');

    if (display != 'none' && display != null) // Safari bug

      return {width: element.offsetWidth, height: element.offsetHeight};
 

    // All *Width and *Height properties give 0 on elements with display none,

    // so enable the element temporarily

    var els = element.style;

    var originalVisibility = els.visibility;

    var originalPosition = els.position;

    var originalDisplay = els.display;

    els.visibility = 'hidden';

    els.position = 'absolute';

    els.display = 'block';

    var originalWidth = element.clientWidth;

    var originalHeight = element.clientHeight;

    els.display = originalDisplay;

    els.position = originalPosition;

    els.visibility = originalVisibility;

    return {width: originalWidth, height: originalHeight};

  },
 

  makePositioned: function(element) {

    element = $(element);

    var pos = Element.getStyle(element, 'position');

    if (pos == 'static' || !pos) {

      element._madePositioned = true;

      element.style.position = 'relative';

      // Opera returns the offset relative to the positioning context, when an

      // element is position relative but top and left have not been defined

      if (window.opera) {

        element.style.top = 0;

        element.style.left = 0;

      }

    }

    return element;

  },
 

  undoPositioned: function(element) {

    element = $(element);

    if (element._madePositioned) {

      element._madePositioned = undefined;

      element.style.position =

        element.style.top =

        element.style.left =

        element.style.bottom =

        element.style.right = '';

    }

    return element;

  },
 

  makeClipping: function(element) {

    element = $(element);

    if (element._overflow) return element;

    element._overflow = Element.getStyle(element, 'overflow') || 'auto';

    if (element._overflow !== 'hidden')

      element.style.overflow = 'hidden';

    return element;

  },
 

  undoClipping: function(element) {

    element = $(element);

    if (!element._overflow) return element;

    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;

    element._overflow = null;

    return element;

  },
 

  cumulativeOffset: function(element) {

    var valueT = 0, valueL = 0;

    do {

      valueT += element.offsetTop  || 0;

      valueL += element.offsetLeft || 0;

      element = element.offsetParent;

    } while (element);

    return Element._returnOffset(valueL, valueT);

  },
 

  positionedOffset: function(element) {

    var valueT = 0, valueL = 0;

    do {

      valueT += element.offsetTop  || 0;

      valueL += element.offsetLeft || 0;

      element = element.offsetParent;

      if (element) {

        if (element.tagName == 'BODY') break;

        var p = Element.getStyle(element, 'position');

        if (p !== 'static') break;

      }

    } while (element);

    return Element._returnOffset(valueL, valueT);

  },
 

  absolutize: function(element) {

    element = $(element);

    if (element.getStyle('position') == 'absolute') return;

    // Position.prepare(); // To be done manually by Scripty when it needs it.
 

    var offsets = element.positionedOffset();

    var top     = offsets[1];

    var left    = offsets[0];

    var width   = element.clientWidth;

    var height  = element.clientHeight;
 

    element._originalLeft   = left - parseFloat(element.style.left  || 0);

    element._originalTop    = top  - parseFloat(element.style.top || 0);

    element._originalWidth  = element.style.width;

    element._originalHeight = element.style.height;
 

    element.style.position = 'absolute';

    element.style.top    = top + 'px';

    element.style.left   = left + 'px';

    element.style.width  = width + 'px';

    element.style.height = height + 'px';

    return element;

  },
 

  relativize: function(element) {

    element = $(element);

    if (element.getStyle('position') == 'relative') return;

    // Position.prepare(); // To be done manually by Scripty when it needs it.
 

    element.style.position = 'relative';

    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);

    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
 

    element.style.top    = top + 'px';

    element.style.left   = left + 'px';

    element.style.height = element._originalHeight;

    element.style.width  = element._originalWidth;

    return element;

  },
 

  cumulativeScrollOffset: function(element) {

    var valueT = 0, valueL = 0;

    do {

      valueT += element.scrollTop  || 0;

      valueL += element.scrollLeft || 0;

      element = element.parentNode;

    } while (element);

    return Element._returnOffset(valueL, valueT);

  },
 

  getOffsetParent: function(element) {

    if (element.offsetParent) return $(element.offsetParent);

    if (element == document.body) return $(element);
 

    while ((element = element.parentNode) && element != document.body)

      if (Element.getStyle(element, 'position') != 'static')

        return $(element);
 

    return $(document.body);

  },
 

  viewportOffset: function(forElement) {

    var valueT = 0, valueL = 0;
 

    var element = forElement;

    do {

      valueT += element.offsetTop  || 0;

      valueL += element.offsetLeft || 0;
 

      // Safari fix

      if (element.offsetParent == document.body &&

        Element.getStyle(element, 'position') == 'absolute') break;
 

    } while (element = element.offsetParent);
 

    element = forElement;

    do {

      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {

        valueT -= element.scrollTop  || 0;

        valueL -= element.scrollLeft || 0;

      }

    } while (element = element.parentNode);
 

    return Element._returnOffset(valueL, valueT);

  },
 

  clonePosition: function(element, source) {

    var options = Object.extend({

      setLeft:    true,

      setTop:     true,

      setWidth:   true,

      setHeight:  true,

      offsetTop:  0,

      offsetLeft: 0

    }, arguments[2] || { });
 

    // find page position of source

    source = $(source);

    var p = source.viewportOffset();
 

    // find coordinate system to use

    element = $(element);

    var delta = [0, 0];

    var parent = null;

    // delta [0,0] will do fine with position: fixed elements,

    // position:absolute needs offsetParent deltas

    if (Element.getStyle(element, 'position') == 'absolute') {

      parent = element.getOffsetParent();

      delta = parent.viewportOffset();

    }
 

    // correct by body offsets (fixes Safari)

    if (parent == document.body) {

      delta[0] -= document.body.offsetLeft;

      delta[1] -= document.body.offsetTop;

    }
 

    // set position

    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';

    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';

    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';

    if (options.setHeight) element.style.height = source.offsetHeight + 'px';

    return element;

  }

};
 

Element.Methods.identify.counter = 1;
 

Object.extend(Element.Methods, {

  getElementsBySelector: Element.Methods.select,

  childElements: Element.Methods.immediateDescendants

});
 

Element._attributeTranslations = {

  write: {

    names: {

      className: 'class',

      htmlFor:   'for'

    },

    values: { }

  }

};
 

if (Prototype.Browser.Opera) {

  Element.Methods.getStyle = Element.Methods.getStyle.wrap(

    function(proceed, element, style) {

      switch (style) {

        case 'left': case 'top': case 'right': case 'bottom':

          if (proceed(element, 'position') === 'static') return null;

        case 'height': case 'width':

          // returns '0px' for hidden elements; we want it to return null

          if (!Element.visible(element)) return null;
 

          // returns the border-box dimensions rather than the content-box

          // dimensions, so we subtract padding and borders from the value

          var dim = parseInt(proceed(element, style), 10);
 

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

            return dim + 'px';
 

          var properties;

          if (style === 'height') {

            properties = ['border-top-width', 'padding-top',

             'padding-bottom', 'border-bottom-width'];

          }

          else {

            properties = ['border-left-width', 'padding-left',

             'padding-right', 'border-right-width'];

          }

          return properties.inject(dim, function(memo, property) {

            var val = proceed(element, property);

            return val === null ? memo : memo - parseInt(val, 10);

          }) + 'px';

        default: return proceed(element, style);

      }

    }

  );
 

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(

    function(proceed, element, attribute) {

      if (attribute === 'title') return element.title;

      return proceed(element, attribute);

    }

  );

}
 

else if (Prototype.Browser.IE) {

  // IE doesn't report offsets correctly for static elements, so we change them

  // to "relative" to get the values, then change them back.

  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(

    function(proceed, element) {

      element = $(element);

      var position = element.getStyle('position');

      if (position !== 'static') return proceed(element);

      element.setStyle({ position: 'relative' });

      var value = proceed(element);

      element.setStyle({ position: position });

      return value;

    }

  );
 

  $w('positionedOffset viewportOffset').each(function(method) {

    Element.Methods[method] = Element.Methods[method].wrap(

      function(proceed, element) {

        element = $(element);

        var position = element.getStyle('position');

        if (position !== 'static') return proceed(element);

        // Trigger hasLayout on the offset parent so that IE6 reports

        // accurate offsetTop and offsetLeft values for position: fixed.

        var offsetParent = element.getOffsetParent();

        if (offsetParent && offsetParent.getStyle('position') === 'fixed')

          offsetParent.setStyle({ zoom: 1 });

        element.setStyle({ position: 'relative' });

        var value = proceed(element);

        element.setStyle({ position: position });

        return value;

      }

    );

  });
 

  Element.Methods.getStyle = function(element, style) {

    element = $(element);

    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();

    var value = element.style[style];

    if (!value && element.currentStyle) value = element.currentStyle[style];
 

    if (style == 'opacity') {

      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))

        if (value[1]) return parseFloat(value[1]) / 100;

      return 1.0;

    }
 

    if (value == 'auto') {

      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))

        return element['offset' + style.capitalize()] + 'px';

      return null;

    }

    return value;

  };
 

  Element.Methods.setOpacity = function(element, value) {

    function stripAlpha(filter){

      return filter.replace(/alpha\([^\)]*\)/gi,'');

    }

    element = $(element);

    var currentStyle = element.currentStyle;

    if ((currentStyle && !currentStyle.hasLayout) ||

      (!currentStyle && element.style.zoom == 'normal'))

        element.style.zoom = 1;
 

    var filter = element.getStyle('filter'), style = element.style;

    if (value == 1 || value === '') {

      (filter = stripAlpha(filter)) ?

        style.filter = filter : style.removeAttribute('filter');

      return element;

    } else if (value < 0.00001) value = 0;

    style.filter = stripAlpha(filter) +

      'alpha(opacity=' + (value * 100) + ')';

    return element;

  };
 

  Element._attributeTranslations = {

    read: {

      names: {

        'class': 'className',

        'for':   'htmlFor'

      },

      values: {

        _getAttr: function(element, attribute) {

          return element.getAttribute(attribute, 2);

        },

        _getAttrNode: function(element, attribute) {

          var node = element.getAttributeNode(attribute);

          return node ? node.value : "";

        },

        _getEv: function(element, attribute) {

          attribute = element.getAttribute(attribute);

          return attribute ? attribute.toString().slice(23, -2) : null;

        },

        _flag: function(element, attribute) {

          return $(element).hasAttribute(attribute) ? attribute : null;

        },

        style: function(element) {

          return element.style.cssText.toLowerCase();

        },

        title: function(element) {

          return element.title;

        }

      }

    }

  };
 

  Element._attributeTranslations.write = {

    names: Object.extend({

      cellpadding: 'cellPadding',

      cellspacing: 'cellSpacing'

    }, Element._attributeTranslations.read.names),

    values: {

      checked: function(element, value) {

        element.checked = !!value;

      },
 

      style: function(element, value) {

        element.style.cssText = value ? value : '';

      }

    }

  };
 

  Element._attributeTranslations.has = {};
 

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +

      'encType maxLength readOnly longDesc').each(function(attr) {

    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;

    Element._attributeTranslations.has[attr.toLowerCase()] = attr;

  });
 

  (function(v) {

    Object.extend(v, {

      href:        v._getAttr,

      src:         v._getAttr,

      type:        v._getAttr,

      action:      v._getAttrNode,

      disabled:    v._flag,

      checked:     v._flag,

      readonly:    v._flag,

      multiple:    v._flag,

      onload:      v._getEv,

      onunload:    v._getEv,

      onclick:     v._getEv,

      ondblclick:  v._getEv,

      onmousedown: v._getEv,

      onmouseup:   v._getEv,

      onmouseover: v._getEv,

      onmousemove: v._getEv,

      onmouseout:  v._getEv,

      onfocus:     v._getEv,

      onblur:      v._getEv,

      onkeypress:  v._getEv,

      onkeydown:   v._getEv,

      onkeyup:     v._getEv,

      onsubmit:    v._getEv,

      onreset:     v._getEv,

      onselect:    v._getEv,

      onchange:    v._getEv

    });

  })(Element._attributeTranslations.read.values);

}
 

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {

  Element.Methods.setOpacity = function(element, value) {

    element = $(element);

    element.style.opacity = (value == 1) ? 0.999999 :

      (value === '') ? '' : (value < 0.00001) ? 0 : value;

    return element;

  };

}
 

else if (Prototype.Browser.WebKit) {

  Element.Methods.setOpacity = function(element, value) {

    element = $(element);

    element.style.opacity = (value == 1 || value === '') ? '' :

      (value < 0.00001) ? 0 : value;
 

    if (value == 1)

      if(element.tagName == 'IMG' && element.width) {

        element.width++; element.width--;

      } else try {

        var n = document.createTextNode(' ');

        element.appendChild(n);

        element.removeChild(n);

      } catch (e) { }
 

    return element;

  };
 

  // Safari returns margins on body which is incorrect if the child is absolutely

  // positioned.  For performance reasons, redefine Element#cumulativeOffset for

  // KHTML/WebKit only.

  Element.Methods.cumulativeOffset = function(element) {

    var valueT = 0, valueL = 0;

    do {

      valueT += element.offsetTop  || 0;

      valueL += element.offsetLeft || 0;

      if (element.offsetParent == document.body)

        if (Element.getStyle(element, 'position') == 'absolute') break;
 

      element = element.offsetParent;

    } while (element);
 

    return Element._returnOffset(valueL, valueT);

  };

}
 

if (Prototype.Browser.IE || Prototype.Browser.Opera) {

  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements

  Element.Methods.update = function(element, content) {

    element = $(element);
 

    if (content && content.toElement) content = content.toElement();

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

    content = Object.toHTML(content);

    var tagName = element.tagName.toUpperCase();
 

    if (tagName in Element._insertionTranslations.tags) {

      $A(element.childNodes).each(function(node) { element.removeChild(node) });

      Element._getContentFromAnonymousElement(tagName, content.stripScripts())

        .each(function(node) { element.appendChild(node) });

    }

    else element.innerHTML = content.stripScripts();
 

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

    return element;

  };

}
 

if ('outerHTML' in document.createElement('div')) {

  Element.Methods.replace = function(element, content) {

    element = $(element);
 

    if (content && content.toElement) content = content.toElement();

    if (Object.isElement(content)) {

      element.parentNode.replaceChild(content, element);

      return element;

    }
 

    content = Object.toHTML(content);

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

    if (Element._insertionTranslations.tags[tagName]) {

      var nextSibling = element.next();

      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      parent.removeChild(element);

      if (nextSibling)

        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });

      else

        fragments.each(function(node) { parent.appendChild(node) });

    }

    else element.outerHTML = content.stripScripts();
 

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

    return element;

  };

}
 

Element._returnOffset = function(l, t) {

  var result = [l, t];

  result.left = l;

  result.top = t;

  return result;

};
 

Element._getContentFromAnonymousElement = function(tagName, html) {

  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];

  if (t) {

    div.innerHTML = t[0] + html + t[1];

    t[2].times(function() { div = div.firstChild });

  } else div.innerHTML = html;

  return $A(div.childNodes);

};
 

Element._insertionTranslations = {

  before: function(element, node) {

    element.parentNode.insertBefore(node, element);

  },

  top: function(element, node) {

    element.insertBefore(node, element.firstChild);

  },

  bottom: function(element, node) {

    element.appendChild(node);

  },

  after: function(element, node) {

    element.parentNode.insertBefore(node, element.nextSibling);

  },

  tags: {

    TABLE:  ['<table>',                '</table>',                   1],

    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],

    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],

    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],

    SELECT: ['<select>',               '</select>',                  1]

  }

};
 

(function() {

  Object.extend(this.tags, {

    THEAD: this.tags.TBODY,

    TFOOT: this.tags.TBODY,

    TH:    this.tags.TD

  });

}).call(Element._insertionTranslations);
 

Element.Methods.Simulated = {

  hasAttribute: function(element, attribute) {

    attribute = Element._attributeTranslations.has[attribute] || attribute;

    var node = $(element).getAttributeNode(attribute);

    return node && node.specified;

  }

};
 

Element.Methods.ByTag = { };
 

Object.extend(Element, Element.Methods);
 

if (!Prototype.BrowserFeatures.ElementExtensions &&

    document.createElement('div').__proto__) {

  window.HTMLElement = { };

  window.HTMLElement.prototype = document.createElement('div').__proto__;

  Prototype.BrowserFeatures.ElementExtensions = true;

}
 

Element.extend = (function() {

  if (Prototype.BrowserFeatures.SpecificElementExtensions)

    return Prototype.K;
 

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

  var extend = Object.extend(function(element) {

    if (!element || element._extendedByPrototype ||

        element.nodeType != 1 || element == window) return element;
 

    var methods = Object.clone(Methods),

      tagName = element.tagName, property, value;
 

    // extend methods for specific tags

    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
 

    for (property in methods) {

      value = methods[property];

      if (Object.isFunction(value) && !(property in element))

        element[property] = value.methodize();

    }
 

    element._extendedByPrototype = Prototype.emptyFunction;

    return element;
 

  }, {

    refresh: function() {

      // extend methods for all tags (Safari doesn't need this)

      if (!Prototype.BrowserFeatures.ElementExtensions) {

        Object.extend(Methods, Element.Methods);

        Object.extend(Methods, Element.Methods.Simulated);

      }

    }

  });
 

  extend.refresh();

  return extend;

})();
 

Element.hasAttribute = function(element, attribute) {

  if (element.hasAttribute) return element.hasAttribute(attribute);

  return Element.Methods.Simulated.hasAttribute(element, attribute);

};
 

Element.addMethods = function(methods) {

  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
 

  if (!methods) {

    Object.extend(Form, Form.Methods);

    Object.extend(Form.Element, Form.Element.Methods);

    Object.extend(Element.Methods.ByTag, {

      "FORM":     Object.clone(Form.Methods),

      "INPUT":    Object.clone(Form.Element.Methods),

      "SELECT":   Object.clone(Form.Element.Methods),

      "TEXTAREA": Object.clone(Form.Element.Methods)

    });

  }
 

  if (arguments.length == 2) {

    var tagName = methods;

    methods = arguments[1];

  }
 

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

  else {

    if (Object.isArray(tagName)) tagName.each(extend);

    else extend(tagName);

  }
 

  function extend(tagName) {

    tagName = tagName.toUpperCase();

    if (!Element.Methods.ByTag[tagName])

      Element.Methods.ByTag[tagName] = { };

    Object.extend(Element.Methods.ByTag[tagName], methods);

  }
 

  function copy(methods, destination, onlyIfAbsent) {

    onlyIfAbsent = onlyIfAbsent || false;

    for (var property in methods) {

      var value = methods[property];

      if (!Object.isFunction(value)) continue;

      if (!onlyIfAbsent || !(property in destination))

        destination[property] = value.methodize();

    }

  }
 

  function findDOMClass(tagName) {

    var klass;

    var trans = {

      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",

      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",

      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",

      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",

      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":

      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":

      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":

      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":

      "FrameSet", "IFRAME": "IFrame"

    };

    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';

    if (window[klass]) return window[klass];

    klass = 'HTML' + tagName + 'Element';

    if (window[klass]) return window[klass];

    klass = 'HTML' + tagName.capitalize() + 'Element';

    if (window[klass]) return window[klass];
 

    window[klass] = { };

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

    return window[klass];

  }
 

  if (F.ElementExtensions) {

    copy(Element.Methods, HTMLElement.prototype);

    copy(Element.Methods.Simulated, HTMLElement.prototype, true);

  }
 

  if (F.SpecificElementExtensions) {

    for (var tag in Element.Methods.ByTag) {

      var klass = findDOMClass(tag);

      if (Object.isUndefined(klass)) continue;

      copy(T[tag], klass.prototype);

    }

  }
 

  Object.extend(Element, Element.Methods);

  delete Element.ByTag;
 

  if (Element.extend.refresh) Element.extend.refresh();

  Element.cache = { };

};
 

document.viewport = {

  getDimensions: function() {

    var dimensions = { };

    var B = Prototype.Browser;

    $w('width height').each(function(d) {

      var D = d.capitalize();

      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :

        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];

    });

    return dimensions;

  },
 

  getWidth: function() {

    return this.getDimensions().width;

  },
 

  getHeight: function() {

    return this.getDimensions().height;

  },
 

  getScrollOffsets: function() {

    return Element._returnOffset(

      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,

      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);

  }

};

/* Portions of the Selector class are derived from Jack Slocumâ¬"s DomQuery,

 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style

 * license.  Please see http://www.yui-ext.com/ for more information. */
 

var Selector = Class.create({

  initialize: function(expression) {

    this.expression = expression.strip();

    this.compileMatcher();

  },
 

  shouldUseXPath: function() {

    if (!Prototype.BrowserFeatures.XPath) return false;
 

    var e = this.expression;
 

    // Safari 3 chokes on :*-of-type and :empty

    if (Prototype.Browser.WebKit &&

     (e.include("-of-type") || e.include(":empty")))

      return false;
 

    // XPath can't do namespaced attributes, nor can it read

    // the "checked" property from DOM nodes

    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))

      return false;
 

    return true;

  },
 

  compileMatcher: function() {

    if (this.shouldUseXPath())

      return this.compileXPathMatcher();
 

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,

        c = Selector.criteria, le, p, m;
 

    if (Selector._cache[e]) {

      this.matcher = Selector._cache[e];

      return;

    }
 

    this.matcher = ["this.matcher = function(root) {",

                    "var r = root, h = Selector.handlers, c = false, n;"];
 

    while (e && le != e && (/\S/).test(e)) {

      le = e;

      for (var i in ps) {

        p = ps[i];

        if (m = e.match(p)) {

          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :

    	      new Template(c[i]).evaluate(m));

          e = e.replace(m[0], '');

          break;

        }

      }

    }
 

    this.matcher.push("return h.unique(n);\n}");

    eval(this.matcher.join('\n'));

    Selector._cache[this.expression] = this.matcher;

  },
 

  compileXPathMatcher: function() {

    var e = this.expression, ps = Selector.patterns,

        x = Selector.xpath, le, m;
 

    if (Selector._cache[e]) {

      this.xpath = Selector._cache[e]; return;

    }
 

    this.matcher = ['.//*'];

    while (e && le != e && (/\S/).test(e)) {

      le = e;

      for (var i in ps) {

        if (m = e.match(ps[i])) {

          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :

            new Template(x[i]).evaluate(m));

          e = e.replace(m[0], '');

          break;

        }

      }

    }
 

    this.xpath = this.matcher.join('');

    Selector._cache[this.expression] = this.xpath;

  },
 

  findElements: function(root) {

    root = root || document;

    if (this.xpath) return document._getElementsByXPath(this.xpath, root);

    return this.matcher(root);

  },
 

  match: function(element) {

    this.tokens = [];
 

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

    var le, p, m;
 

    while (e && le !== e && (/\S/).test(e)) {

      le = e;

      for (var i in ps) {

        p = ps[i];

        if (m = e.match(p)) {

          // use the Selector.assertions methods unless the selector

          // is too complex.

          if (as[i]) {

            this.tokens.push([i, Object.clone(m)]);

            e = e.replace(m[0], '');

          } else {

            // reluctantly do a document-wide search

            // and look for a match in the array

            return this.findElements(document).include(element);

          }

        }

      }

    }
 

    var match = true, name, matches;

    for (var i = 0, token; token = this.tokens[i]; i++) {

      name = token[0], matches = token[1];

      if (!Selector.assertions[name](element, matches)) {

        match = false; break;

      }

    }
 

    return match;

  },
 

  toString: function() {

    return this.expression;

  },
 

  inspect: function() {

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

  }

});
 

Object.extend(Selector, {

  _cache: { },
 

  xpath: {

    descendant:   "//*",

    child:        "/*",

    adjacent:     "/following-sibling::*[1]",

    laterSibling: '/following-sibling::*',

    tagName:      function(m) {

      if (m[1] == '*') return '';

      return "[local-name()='" + m[1].toLowerCase() +

             "' or local-name()='" + m[1].toUpperCase() + "']";

    },

    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",

    id:           "[@id='#{1}']",

    attrPresence: function(m) {

      m[1] = m[1].toLowerCase();

      return new Template("[@#{1}]").evaluate(m);

    },

    attr: function(m) {

      m[1] = m[1].toLowerCase();

      m[3] = m[5] || m[6];

      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);

    },

    pseudo: function(m) {

      var h = Selector.xpath.pseudos[m[1]];

      if (!h) return '';

      if (Object.isFunction(h)) return h(m);

      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);

    },

    operators: {

      '=':  "[@#{1}='#{3}']",

      '!=': "[@#{1}!='#{3}']",

      '^=': "[starts-with(@#{1}, '#{3}')]",

      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",

      '*=': "[contains(@#{1}, '#{3}')]",

      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",

      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"

    },

    pseudos: {

      'first-child': '[not(preceding-sibling::*)]',

      'last-child':  '[not(following-sibling::*)]',

      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',

      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",

      'checked':     "[@checked]",

      'disabled':    "[@disabled]",

      'enabled':     "[not(@disabled)]",

      'not': function(m) {

        var e = m[6], p = Selector.patterns,

            x = Selector.xpath, le, v;
 

        var exclusion = [];

        while (e && le != e && (/\S/).test(e)) {

          le = e;

          for (var i in p) {

            if (m = e.match(p[i])) {

              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);

              exclusion.push("(" + v.substring(1, v.length - 1) + ")");

              e = e.replace(m[0], '');

              break;

            }

          }

        }

        return "[not(" + exclusion.join(" and ") + ")]";

      },

      'nth-child':      function(m) {

        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);

      },

      'nth-last-child': function(m) {

        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);

      },

      'nth-of-type':    function(m) {

        return Selector.xpath.pseudos.nth("position() ", m);

      },

      'nth-last-of-type': function(m) {

        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);

      },

      'first-of-type':  function(m) {

        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);

      },

      'last-of-type':   function(m) {

        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);

      },

      'only-of-type':   function(m) {

        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);

      },

      nth: function(fragment, m) {

        var mm, formula = m[6], predicate;

        if (formula == 'even') formula = '2n+0';

        if (formula == 'odd')  formula = '2n+1';

        if (mm = formula.match(/^(\d+)$/)) // digit only

          return '[' + fragment + "= " + mm[1] + ']';

        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b

          if (mm[1] == "-") mm[1] = -1;

          var a = mm[1] ? Number(mm[1]) : 1;

          var b = mm[2] ? Number(mm[2]) : 0;

          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +

          "((#{fragment} - #{b}) div #{a} >= 0)]";

          return new Template(predicate).evaluate({

            fragment: fragment, a: a, b: b });

        }

      }

    }

  },
 

  criteria: {

    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',

    className:    'n = h.className(n, r, "#{1}", c);    c = false;',

    id:           'n = h.id(n, r, "#{1}", c);           c = false;',

    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',

    attr: function(m) {

      m[3] = (m[5] || m[6]);

      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);

    },

    pseudo: function(m) {

      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');

      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);

    },

    descendant:   'c = "descendant";',

    child:        'c = "child";',

    adjacent:     'c = "adjacent";',

    laterSibling: 'c = "laterSibling";'

  },
 

  patterns: {

    // combinators must be listed first

    // (and descendant needs to be last combinator)

    laterSibling: /^\s*~\s*/,

    child:        /^\s*>\s*/,

    adjacent:     /^\s*\+\s*/,

    descendant:   /^\s/,
 

    // selectors follow

    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,

    id:           /^#([\w\-\*]+)(\b|$)/,

    className:    /^\.([\w\-\*]+)(\b|$)/,

    pseudo:

/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,

    attrPresence: /^\[([\w]+)\]/,

    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/

  },
 

  // for Selector.match and Element#match

  assertions: {

    tagName: function(element, matches) {

      return matches[1].toUpperCase() == element.tagName.toUpperCase();

    },
 

    className: function(element, matches) {

      return Element.hasClassName(element, matches[1]);

    },
 

    id: function(element, matches) {

      return element.id === matches[1];

    },
 

    attrPresence: function(element, matches) {

      return Element.hasAttribute(element, matches[1]);

    },
 

    attr: function(element, matches) {

      var nodeValue = Element.readAttribute(element, matches[1]);

      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);

    }

  },
 

  handlers: {

    // UTILITY FUNCTIONS

    // joins two collections

    concat: function(a, b) {

      for (var i = 0, node; node = b[i]; i++)

        a.push(node);

      return a;

    },
 

    // marks an array of nodes for counting

    mark: function(nodes) {

      var _true = Prototype.emptyFunction;

      for (var i = 0, node; node = nodes[i]; i++)

        node._countedByPrototype = _true;

      return nodes;

    },
 

    unmark: function(nodes) {

      for (var i = 0, node; node = nodes[i]; i++)

        node._countedByPrototype = undefined;

      return nodes;

    },
 

    // mark each child node with its position (for nth calls)

    // "ofType" flag indicates whether we're indexing for nth-of-type

    // rather than nth-child

    index: function(parentNode, reverse, ofType) {

      parentNode._countedByPrototype = Prototype.emptyFunction;

      if (reverse) {

        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {

          var node = nodes[i];

          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;

        }

      } else {

        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)

          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;

      }

    },
 

    // filters out duplicates and extends all nodes

    unique: function(nodes) {

      if (nodes.length == 0) return nodes;

      var results = [], n;

      for (var i = 0, l = nodes.length; i < l; i++)

        if (!(n = nodes[i])._countedByPrototype) {

          n._countedByPrototype = Prototype.emptyFunction;

          results.push(Element.extend(n));

        }

      return Selector.handlers.unmark(results);

    },
 

    // COMBINATOR FUNCTIONS

    descendant: function(nodes) {

      var h = Selector.handlers;

      for (var i = 0, results = [], node; node = nodes[i]; i++)

        h.concat(results, node.getElementsByTagName('*'));

      return results;

    },
 

    child: function(nodes) {

      var h = Selector.handlers;

      for (var i = 0, results = [], node; node = nodes[i]; i++) {

        for (var j = 0, child; child = node.childNodes[j]; j++)

          if (child.nodeType == 1 && child.tagName != '!') results.push(child);

      }

      return results;

    },
 

    adjacent: function(nodes) {

      for (var i = 0, results = [], node; node = nodes[i]; i++) {

        var next = this.nextElementSibling(node);

        if (next) results.push(next);

      }

      return results;

    },
 

    laterSibling: function(nodes) {

      var h = Selector.handlers;

      for (var i = 0, results = [], node; node = nodes[i]; i++)

        h.concat(results, Element.nextSiblings(node));

      return results;

    },
 

    nextElementSibling: function(node) {

      while (node = node.nextSibling)

	      if (node.nodeType == 1) return node;

      return null;

    },
 

    previousElementSibling: function(node) {

      while (node = node.previousSibling)

        if (node.nodeType == 1) return node;

      return null;

    },
 

    // TOKEN FUNCTIONS

    tagName: function(nodes, root, tagName, combinator) {

      var uTagName = tagName.toUpperCase();

      var results = [], h = Selector.handlers;

      if (nodes) {

        if (combinator) {

          // fastlane for ordinary descendant combinators

          if (combinator == "descendant") {

            for (var i = 0, node; node = nodes[i]; i++)

              h.concat(results, node.getElementsByTagName(tagName));

            return results;

          } else nodes = this[combinator](nodes);

          if (tagName == "*") return nodes;

        }

        for (var i = 0, node; node = nodes[i]; i++)

          if (node.tagName.toUpperCase() === uTagName) results.push(node);

        return results;

      } else return root.getElementsByTagName(tagName);

    },
 

    id: function(nodes, root, id, combinator) {

      var targetNode = $(id), h = Selector.handlers;

      if (!targetNode) return [];

      if (!nodes && root == document) return [targetNode];

      if (nodes) {

        if (combinator) {

          if (combinator == 'child') {

            for (var i = 0, node; node = nodes[i]; i++)

              if (targetNode.parentNode == node) return [targetNode];

          } else if (combinator == 'descendant') {

            for (var i = 0, node; node = nodes[i]; i++)

              if (Element.descendantOf(targetNode, node)) return [targetNode];

          } else if (combinator == 'adjacent') {

            for (var i = 0, node; node = nodes[i]; i++)

              if (Selector.handlers.previousElementSibling(targetNode) == node)

                return [targetNode];

          } else nodes = h[combinator](nodes);

        }

        for (var i = 0, node; node = nodes[i]; i++)

          if (node == targetNode) return [targetNode];

        return [];

      }

      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];

    },
 

    className: function(nodes, root, className, combinator) {

      if (nodes && combinator) nodes = this[combinator](nodes);

      return Selector.handlers.byClassName(nodes, root, className);

    },
 

    byClassName: function(nodes, root, className) {

      if (!nodes) nodes = Selector.handlers.descendant([root]);

      var needle = ' ' + className + ' ';

      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {

        nodeClassName = node.className;

        if (nodeClassName.length == 0) continue;

        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))

          results.push(node);

      }

      return results;

    },
 

    attrPresence: function(nodes, root, attr, combinator) {

      if (!nodes) nodes = root.getElementsByTagName("*");

      if (nodes && combinator) nodes = this[combinator](nodes);

      var results = [];

      for (var i = 0, node; node = nodes[i]; i++)

        if (Element.hasAttribute(node, attr)) results.push(node);

      return results;

    },
 

    attr: function(nodes, root, attr, value, operator, combinator) {

      if (!nodes) nodes = root.getElementsByTagName("*");

      if (nodes && combinator) nodes = this[combinator](nodes);

      var handler = Selector.operators[operator], results = [];

      for (var i = 0, node; node = nodes[i]; i++) {

        var nodeValue = Element.readAttribute(node, attr);

        if (nodeValue === null) continue;

        if (handler(nodeValue, value)) results.push(node);

      }

      return results;

    },
 

    pseudo: function(nodes, name, value, root, combinator) {

      if (nodes && combinator) nodes = this[combinator](nodes);

      if (!nodes) nodes = root.getElementsByTagName("*");

      return Selector.pseudos[name](nodes, value, root);

    }

  },
 

  pseudos: {

    'first-child': function(nodes, value, root) {

      for (var i = 0, results = [], node; node = nodes[i]; i++) {

        if (Selector.handlers.previousElementSibling(node)) continue;

          results.push(node);

      }

      return results;

    },

    'last-child': function(nodes, value, root) {

      for (var i = 0, results = [], node; node = nodes[i]; i++) {

        if (Selector.handlers.nextElementSibling(node)) continue;

          results.push(node);

      }

      return results;

    },

    'only-child': function(nodes, value, root) {

      var h = Selector.handlers;

      for (var i = 0, results = [], node; node = nodes[i]; i++)

        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))

          results.push(node);

      return results;

    },

    'nth-child':        function(nodes, formula, root) {

      return Selector.pseudos.nth(nodes, formula, root);

    },

    'nth-last-child':   function(nodes, formula, root) {

      return Selector.pseudos.nth(nodes, formula, root, true);

    },

    'nth-of-type':      function(nodes, formula, root) {

      return Selector.pseudos.nth(nodes, formula, root, false, true);

    },

    'nth-last-of-type': function(nodes, formula, root) {

      return Selector.pseudos.nth(nodes, formula, root, true, true);

    },

    'first-of-type':    function(nodes, formula, root) {

      return Selector.pseudos.nth(nodes, "1", root, false, true);

    },

    'last-of-type':     function(nodes, formula, root) {

      return Selector.pseudos.nth(nodes, "1", root, true, true);

    },

    'only-of-type':     function(nodes, formula, root) {

      var p = Selector.pseudos;

      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);

    },
 

    // handles the an+b logic

    getIndices: function(a, b, total) {

      if (a == 0) return b > 0 ? [b] : [];

      return $R(1, total).inject([], function(memo, i) {

        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);

        return memo;

      });

    },
 

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type

    nth: function(nodes, formula, root, reverse, ofType) {

      if (nodes.length == 0) return [];

      if (formula == 'even') formula = '2n+0';

      if (formula == 'odd')  formula = '2n+1';

      var h = Selector.handlers, results = [], indexed = [], m;

      h.mark(nodes);

      for (var i = 0, node; node = nodes[i]; i++) {

        if (!node.parentNode._countedByPrototype) {

          h.index(node.parentNode, reverse, ofType);

          indexed.push(node.parentNode);

        }

      }

      if (formula.match(/^\d+$/)) { // just a number

        formula = Number(formula);

        for (var i = 0, node; node = nodes[i]; i++)

          if (node.nodeIndex == formula) results.push(node);

      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b

        if (m[1] == "-") m[1] = -1;

        var a = m[1] ? Number(m[1]) : 1;

        var b = m[2] ? Number(m[2]) : 0;

        var indices = Selector.pseudos.getIndices(a, b, nodes.length);

        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {

          for (var j = 0; j < l; j++)

            if (node.nodeIndex == indices[j]) results.push(node);

        }

      }

      h.unmark(nodes);

      h.unmark(indexed);

      return results;

    },
 

    'empty': function(nodes, value, root) {

      for (var i = 0, results = [], node; node = nodes[i]; i++) {

        // IE treats comments as element nodes

        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;

        results.push(node);

      }

      return results;

    },
 

    'not': function(nodes, selector, root) {

      var h = Selector.handlers, selectorType, m;

      var exclusions = new Selector(selector).findElements(root);

      h.mark(exclusions);

      for (var i = 0, results = [], node; node = nodes[i]; i++)

        if (!node._countedByPrototype) results.push(node);

      h.unmark(exclusions);

      return results;

    },
 

    'enabled': function(nodes, value, root) {

      for (var i = 0, results = [], node; node = nodes[i]; i++)

        if (!node.disabled) results.push(node);

      return results;

    },
 

    'disabled': function(nodes, value, root) {

      for (var i = 0, results = [], node; node = nodes[i]; i++)

        if (node.disabled) results.push(node);

      return results;

    },
 

    'checked': function(nodes, value, root) {

      for (var i = 0, results = [], node; node = nodes[i]; i++)

        if (node.checked) results.push(node);

      return results;

    }

  },
 

  operators: {

    '=':  function(nv, v) { return nv == v; },

    '!=': function(nv, v) { return nv != v; },

    '^=': function(nv, v) { return nv.startsWith(v); },

    '$=': function(nv, v) { return nv.endsWith(v); },

    '*=': function(nv, v) { return nv.include(v); },

    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },

    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }

  },
 

  split: function(expression) {

    var expressions = [];

    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {

      expressions.push(m[1].strip());

    });

    return expressions;

  },
 

  matchElements: function(elements, expression) {

    var matches = $$(expression), h = Selector.handlers;

    h.mark(matches);

    for (var i = 0, results = [], element; element = elements[i]; i++)

      if (element._countedByPrototype) results.push(element);

    h.unmark(matches);

    return results;

  },
 

  findElement: function(elements, expression, index) {

    if (Object.isNumber(expression)) {

      index = expression; expression = false;

    }

    return Selector.matchElements(elements, expression || '*')[index || 0];

  },
 

  findChildElements: function(element, expressions) {

    expressions = Selector.split(expressions.join(','));

    var results = [], h = Selector.handlers;

    for (var i = 0, l = expressions.length, selector; i < l; i++) {

      selector = new Selector(expressions[i].strip());

      h.concat(results, selector.findElements(element));

    }

    return (l > 1) ? h.unique(results) : results;

  }

});
 

if (Prototype.Browser.IE) {

  Object.extend(Selector.handlers, {

    // IE returns comment nodes on getElementsByTagName("*").

    // Filter them out.

    concat: function(a, b) {

      for (var i = 0, node; node = b[i]; i++)

        if (node.tagName !== "!") a.push(node);

      return a;

    },
 

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.

    unmark: function(nodes) {

      for (var i = 0, node; node = nodes[i]; i++)

        node.removeAttribute('_countedByPrototype');

      return nodes;

    }

  });

}
 

function $$() {

  return Selector.findChildElements(document, $A(arguments));

}

var Form = {

  reset: function(form) {

    $(form).reset();

    return form;

  },
 

  serializeElements: function(elements, options) {

    if (typeof options != 'object') options = { hash: !!options };

    else if (Object.isUndefined(options.hash)) options.hash = true;

    var key, value, submitted = false, submit = options.submit;
 

    var data = elements.inject({ }, function(result, element) {

      if (!element.disabled && element.name) {

        key = element.name; value = $(element).getValue();

        if (value != null && (element.type != 'submit' || (!submitted &&

            submit !== false && (!submit || key == submit) && (submitted = true)))) {

          if (key in result) {

            // a key is already present; construct an array of values

            if (!Object.isArray(result[key])) result[key] = [result[key]];

            result[key].push(value);

          }

          else result[key] = value;

        }

      }

      return result;

    });
 

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

  }

};
 

Form.Methods = {

  serialize: function(form, options) {

    return Form.serializeElements(Form.getElements(form), options);

  },
 

  getElements: function(form) {

    return $A($(form).getElementsByTagName('*')).inject([],

      function(elements, child) {

        if (Form.Element.Serializers[child.tagName.toLowerCase()])

          elements.push(Element.extend(child));

        return elements;

      }

    );

  },
 

  getInputs: function(form, typeName, name) {

    form = $(form);

    var inputs = form.getElementsByTagName('input');
 

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

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {

      var input = inputs[i];

      if ((typeName && input.type != typeName) || (name && input.name != name))

        continue;

      matchingInputs.push(Element.extend(input));

    }
 

    return matchingInputs;

  },
 

  disable: function(form) {

    form = $(form);

    Form.getElements(form).invoke('disable');

    return form;

  },
 

  enable: function(form) {

    form = $(form);

    Form.getElements(form).invoke('enable');

    return form;

  },
 

  findFirstElement: function(form) {

    var elements = $(form).getElements().findAll(function(element) {

      return 'hidden' != element.type && !element.disabled;

    });

    var firstByIndex = elements.findAll(function(element) {

      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;

    }).sortBy(function(element) { return element.tabIndex }).first();
 

    return firstByIndex ? firstByIndex : elements.find(function(element) {

      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());

    });

  },
 

  focusFirstElement: function(form) {

    form = $(form);

    form.findFirstElement().activate();

    return form;

  },
 

  request: function(form, options) {

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

    var params = options.parameters, action = form.readAttribute('action') || '';

    if (action.blank()) action = window.location.href;

    options.parameters = form.serialize(true);
 

    if (params) {

      if (Object.isString(params)) params = params.toQueryParams();

      Object.extend(options.parameters, params);

    }
 

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

      options.method = form.method;
 

    return new Ajax.Request(action, options);

  }

};
 

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

Form.Element = {

  focus: function(element) {

    $(element).focus();

    return element;

  },
 

  select: function(element) {

    $(element).select();

    return element;

  }

};
 

Form.Element.Methods = {

  serialize: function(element) {

    element = $(element);

    if (!element.disabled && element.name) {

      var value = element.getValue();

      if (value != undefined) {

        var pair = { };

        pair[element.name] = value;

        return Object.toQueryString(pair);

      }

    }

    return '';

  },
 

  getValue: function(element) {

    element = $(element);

    var method = element.tagName.toLowerCase();

    return Form.Element.Serializers[method](element);

  },
 

  setValue: function(element, value) {

    element = $(element);

    var method = element.tagName.toLowerCase();

    Form.Element.Serializers[method](element, value);

    return element;

  },
 

  clear: function(element) {

    $(element).value = '';

    return element;

  },
 

  present: function(element) {

    return $(element).value != '';

  },
 

  activate: function(element) {

    element = $(element);

    try {

      element.focus();

      if (element.select && (element.tagName.toLowerCase() != 'input' ||

          !['button', 'reset', 'submit'].include(element.type)))

        element.select();

    } catch (e) { }

    return element;

  },
 

  disable: function(element) {

    element = $(element);

    element.blur();

    element.disabled = true;

    return element;

  },
 

  enable: function(element) {

    element = $(element);

    element.disabled = false;

    return element;

  }

};
 

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

var Field = Form.Element;

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

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

Form.Element.Serializers = {

  input: function(element, value) {

    switch (element.type.toLowerCase()) {

      case 'checkbox':

      case 'radio':

        return Form.Element.Serializers.inputSelector(element, value);

      default:

        return Form.Element.Serializers.textarea(element, value);

    }

  },
 

  inputSelector: function(element, value) {

    if (Object.isUndefined(value)) return element.checked ? element.value : null;

    else element.checked = !!value;

  },
 

  textarea: function(element, value) {

    if (Object.isUndefined(value)) return element.value;

    else element.value = value;

  },
 

  select: function(element, index) {

    if (Object.isUndefined(index))

      return this[element.type == 'select-one' ?

        'selectOne' : 'selectMany'](element);

    else {

      var opt, value, single = !Object.isArray(index);

      for (var i = 0, length = element.length; i < length; i++) {

        opt = element.options[i];

        value = this.optionValue(opt);

        if (single) {

          if (value == index) {

            opt.selected = true;

            return;

          }

        }

        else opt.selected = index.include(value);

      }

    }

  },
 

  selectOne: function(element) {

    var index = element.selectedIndex;

    return index >= 0 ? this.optionValue(element.options[index]) : null;

  },
 

  selectMany: function(element) {

    var values, length = element.length;

    if (!length) return null;
 

    for (var i = 0, values = []; i < length; i++) {

      var opt = element.options[i];

      if (opt.selected) values.push(this.optionValue(opt));

    }

    return values;

  },
 

  optionValue: function(opt) {

    // extend element because hasAttribute may not be native

    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;

  }

};
 

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

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {

  initialize: function($super, element, frequency, callback) {

    $super(callback, frequency);

    this.element   = $(element);

    this.lastValue = this.getValue();

  },
 

  execute: function() {

    var value = this.getValue();

    if (Object.isString(this.lastValue) && Object.isString(value) ?

        this.lastValue != value : String(this.lastValue) != String(value)) {

      this.callback(this.element, value);

      this.lastValue = value;

    }

  }

});
 

Form.Element.Observer = Class.create(Abstract.TimedObserver, {

  getValue: function() {

    return Form.Element.getValue(this.element);

  }

});
 

Form.Observer = Class.create(Abstract.TimedObserver, {

  getValue: function() {

    return Form.serialize(this.element);

  }

});
 

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

Abstract.EventObserver = Class.create({

  initialize: function(element, callback) {

    this.element  = $(element);

    this.callback = callback;
 

    this.lastValue = this.getValue();

    if (this.element.tagName.toLowerCase() == 'form')

      this.registerFormCallbacks();

    else

      this.registerCallback(this.element);

  },
 

  onElementEvent: function() {

    var value = this.getValue();

    if (this.lastValue != value) {

      this.callback(this.element, value);

      this.lastValue = value;

    }

  },
 

  registerFormCallbacks: function() {

    Form.getElements(this.element).each(this.registerCallback, this);

  },
 

  registerCallback: function(element) {

    if (element.type) {

      switch (element.type.toLowerCase()) {

        case 'checkbox':

        case 'radio':

          Event.observe(element, 'click', this.onElementEvent.bind(this));

          break;

        default:

          Event.observe(element, 'change', this.onElementEvent.bind(this));

          break;

      }

    }

  }

});
 

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {

  getValue: function() {

    return Form.Element.getValue(this.element);

  }

});
 

Form.EventObserver = Class.create(Abstract.EventObserver, {

  getValue: function() {

    return Form.serialize(this.element);

  }

});

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

Object.extend(Event, {

  KEY_BACKSPACE: 8,

  KEY_TAB:       9,

  KEY_RETURN:   13,

  KEY_ESC:      27,

  KEY_LEFT:     37,

  KEY_UP:       38,

  KEY_RIGHT:    39,

  KEY_DOWN:     40,

  KEY_DELETE:   46,

  KEY_HOME:     36,

  KEY_END:      35,

  KEY_PAGEUP:   33,

  KEY_PAGEDOWN: 34,

  KEY_INSERT:   45,
 

  cache: { },
 

  relatedTarget: function(event) {

    var element;

    switch(event.type) {

      case 'mouseover': element = event.fromElement; break;

      case 'mouseout':  element = event.toElement;   break;

      default: return null;

    }

    return Element.extend(element);

  }

});
 

Event.Methods = (function() {

  var isButton;
 

  if (Prototype.Browser.IE) {

    var buttonMap = { 0: 1, 1: 4, 2: 2 };

    isButton = function(event, code) {

      return event.button == buttonMap[code];

    };
 

  } else if (Prototype.Browser.WebKit) {

    isButton = function(event, code) {

      switch (code) {

        case 0: return event.which == 1 && !event.metaKey;

        case 1: return event.which == 1 && event.metaKey;

        default: return false;

      }

    };
 

  } else {

    isButton = function(event, code) {

      return event.which ? (event.which === code + 1) : (event.button === code);

    };

  }
 

  return {

    isLeftClick:   function(event) { return isButton(event, 0) },

    isMiddleClick: function(event) { return isButton(event, 1) },

    isRightClick:  function(event) { return isButton(event, 2) },
 

    element: function(event) {

      var node = Event.extend(event).target;

      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);

    },
 

    findElement: function(event, expression) {

      var element = Event.element(event);

      if (!expression) return element;

      var elements = [element].concat(element.ancestors());

      return Selector.findElement(elements, expression, 0);

    },
 

    pointer: function(event) {

      return {

        x: event.pageX || (event.clientX +

          (document.documentElement.scrollLeft || document.body.scrollLeft)),

        y: event.pageY || (event.clientY +

          (document.documentElement.scrollTop || document.body.scrollTop))

      };

    },
 

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

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

    stop: function(event) {

      Event.extend(event);

      event.preventDefault();

      event.stopPropagation();

      event.stopped = true;

    }

  };

})();
 

Event.extend = (function() {

  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {

    m[name] = Event.Methods[name].methodize();

    return m;

  });
 

  if (Prototype.Browser.IE) {

    Object.extend(methods, {

      stopPropagation: function() { this.cancelBubble = true },

      preventDefault:  function() { this.returnValue = false },

      inspect: function() { return "[object Event]" }

    });
 

    return function(event) {

      if (!event) return false;

      if (event._extendedByPrototype) return event;
 

      event._extendedByPrototype = Prototype.emptyFunction;

      var pointer = Event.pointer(event);

      Object.extend(event, {

        target: event.srcElement,

        relatedTarget: Event.relatedTarget(event),

        pageX:  pointer.x,

        pageY:  pointer.y

      });

      return Object.extend(event, methods);

    };
 

  } else {

    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;

    Object.extend(Event.prototype, methods);

    return Prototype.K;

  }

})();
 

Object.extend(Event, (function() {

  var cache = Event.cache;
 

  function getEventID(element) {

    if (element._prototypeEventID) return element._prototypeEventID[0];

    arguments.callee.id = arguments.callee.id || 1;

    return element._prototypeEventID = [++arguments.callee.id];

  }
 

  function getDOMEventName(eventName) {

    if (eventName && eventName.include(':')) return "dataavailable";

    return eventName;

  }
 

  function getCacheForID(id) {

    return cache[id] = cache[id] || { };

  }
 

  function getWrappersForEventName(id, eventName) {

    var c = getCacheForID(id);

    return c[eventName] = c[eventName] || [];

  }
 

  function createWrapper(element, eventName, handler) {

    var id = getEventID(element);

    var c = getWrappersForEventName(id, eventName);

    if (c.pluck("handler").include(handler)) return false;
 

    var wrapper = function(event) {

      if (!Event || !Event.extend ||

        (event.eventName && event.eventName != eventName))

          return false;
 

      Event.extend(event);

      handler.call(element, event);

    };
 

    wrapper.handler = handler;

    c.push(wrapper);

    return wrapper;

  }
 

  function findWrapper(id, eventName, handler) {

    var c = getWrappersForEventName(id, eventName);

    return c.find(function(wrapper) { return wrapper.handler == handler });

  }
 

  function destroyWrapper(id, eventName, handler) {

    var c = getCacheForID(id);

    if (!c[eventName]) return false;

    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));

  }
 

  function destroyCache() {

    for (var id in cache)

      for (var eventName in cache[id])

        cache[id][eventName] = null;

  }
 

  if (window.attachEvent) {

    window.attachEvent("onunload", destroyCache);

  }
 

  return {

    observe: function(element, eventName, handler) {

      element = $(element);

      var name = getDOMEventName(eventName);
 

      var wrapper = createWrapper(element, eventName, handler);

      if (!wrapper) return element;
 

      if (element.addEventListener) {

        element.addEventListener(name, wrapper, false);

      } else {

        element.attachEvent("on" + name, wrapper);

      }
 

      return element;

    },
 

    stopObserving: function(element, eventName, handler) {

      element = $(element);

      var id = getEventID(element), name = getDOMEventName(eventName);
 

      if (!handler && eventName) {

        getWrappersForEventName(id, eventName).each(function(wrapper) {

          element.stopObserving(eventName, wrapper.handler);

        });

        return element;
 

      } else if (!eventName) {

        Object.keys(getCacheForID(id)).each(function(eventName) {

          element.stopObserving(eventName);

        });

        return element;

      }
 

      var wrapper = findWrapper(id, eventName, handler);

      if (!wrapper) return element;
 

      if (element.removeEventListener) {

        element.removeEventListener(name, wrapper, false);

      } else {

        element.detachEvent("on" + name, wrapper);

      }
 

      destroyWrapper(id, eventName, handler);
 

      return element;

    },
 

    fire: function(element, eventName, memo) {

      element = $(element);

      if (element == document && document.createEvent && !element.dispatchEvent)

        element = document.documentElement;
 

      var event;

      if (document.createEvent) {

        event = document.createEvent("HTMLEvents");

        event.initEvent("dataavailable", true, true);

      } else {

        event = document.createEventObject();

        event.eventType = "ondataavailable";

      }
 

      event.eventName = eventName;

      event.memo = memo || { };
 

      if (document.createEvent) {

        element.dispatchEvent(event);

      } else {

        element.fireEvent(event.eventType, event);

      }
 

      return Event.extend(event);

    }

  };

})());
 

Object.extend(Event, Event.Methods);
 

Element.addMethods({

  fire:          Event.fire,

  observe:       Event.observe,

  stopObserving: Event.stopObserving

});
 

Object.extend(document, {

  fire:          Element.Methods.fire.methodize(),

  observe:       Element.Methods.observe.methodize(),

  stopObserving: Element.Methods.stopObserving.methodize(),

  loaded:        false

});
 

(function() {

  /* Support for the DOMContentLoaded event is based on work by Dan Webb,

     Matthias Miller, Dean Edwards and John Resig. */
 

  var timer;
 

  function fireContentLoadedEvent() {

    if (document.loaded) return;

    if (timer) window.clearInterval(timer);

    document.fire("dom:loaded");

    document.loaded = true;

  }
 

  if (document.addEventListener) {

    if (Prototype.Browser.WebKit) {

      timer = window.setInterval(function() {

        if (/loaded|complete/.test(document.readyState))

          fireContentLoadedEvent();

      }, 0);
 

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

    } else {

      document.addEventListener("DOMContentLoaded",

        fireContentLoadedEvent, false);

    }
 

  } else {

    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");

    $("__onDOMContentLoaded").onreadystatechange = function() {

      if (this.readyState == "complete") {

        this.onreadystatechange = null;

        fireContentLoadedEvent();

      }

    };

  }

})();

/*------------------------------- DEPRECATED -------------------------------*/
 

Hash.toQueryString = Object.toQueryString;
 

var Toggle = { display: Element.toggle };
 

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

var Insertion = {

  Before: function(element, content) {

    return Element.insert(element, {before:content});

  },
 

  Top: function(element, content) {

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

  },
 

  Bottom: function(element, content) {

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

  },
 

  After: function(element, content) {

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

  }

};
 

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

// This should be moved to script.aculo.us; notice the deprecated methods

// further below, that map to the newer Element methods.

var Position = {

  // set to true if needed, warning: firefox performance problems

  // NOT neeeded for page scrolling, only if draggable contained in

  // scrollable elements

  includeScrollOffsets: false,
 

  // must be called before calling withinIncludingScrolloffset, every time the

  // page is scrolled

  prepare: function() {

    this.deltaX =  window.pageXOffset

                || document.documentElement.scrollLeft

                || document.body.scrollLeft

                || 0;

    this.deltaY =  window.pageYOffset

                || document.documentElement.scrollTop

                || document.body.scrollTop

                || 0;

  },
 

  // caches x/y coordinate pair to use with overlap

  within: function(element, x, y) {

    if (this.includeScrollOffsets)

      return this.withinIncludingScrolloffsets(element, x, y);

    this.xcomp = x;

    this.ycomp = y;

    this.offset = Element.cumulativeOffset(element);
 

    return (y >= this.offset[1] &&

            y <  this.offset[1] + element.offsetHeight &&

            x >= this.offset[0] &&

            x <  this.offset[0] + element.offsetWidth);

  },
 

  withinIncludingScrolloffsets: function(element, x, y) {

    var offsetcache = Element.cumulativeScrollOffset(element);
 

    this.xcomp = x + offsetcache[0] - this.deltaX;

    this.ycomp = y + offsetcache[1] - this.deltaY;

    this.offset = Element.cumulativeOffset(element);
 

    return (this.ycomp >= this.offset[1] &&

            this.ycomp <  this.offset[1] + element.offsetHeight &&

            this.xcomp >= this.offset[0] &&

            this.xcomp <  this.offset[0] + element.offsetWidth);

  },
 

  // within must be called directly before

  overlap: function(mode, element) {

    if (!mode) return 0;

    if (mode == 'vertical')

      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /

        element.offsetHeight;

    if (mode == 'horizontal')

      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /

        element.offsetWidth;

  },
 

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

  cumulativeOffset: Element.Methods.cumulativeOffset,
 

  positionedOffset: Element.Methods.positionedOffset,
 

  absolutize: function(element) {

    Position.prepare();

    return Element.absolutize(element);

  },
 

  relativize: function(element) {

    Position.prepare();

    return Element.relativize(element);

  },
 

  realOffset: Element.Methods.cumulativeScrollOffset,
 

  offsetParent: Element.Methods.getOffsetParent,
 

  page: Element.Methods.viewportOffset,
 

  clone: function(source, target, options) {

    options = options || { };

    return Element.clonePosition(target, source, options);

  }

};
 

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

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){

  function iter(name) {

    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";

  }
 

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?

  function(element, className) {

    className = className.toString().strip();

    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);

    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];

  } : function(element, className) {

    className = className.toString().strip();

    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);

    if (!classNames && !className) return elements;
 

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

    className = ' ' + className + ' ';
 

    for (var i = 0, child, cn; child = nodes[i]; i++) {

      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||

          (classNames && classNames.all(function(name) {

            return !name.toString().blank() && cn.include(' ' + name + ' ');

          }))))

        elements.push(Element.extend(child));

    }

    return elements;

  };
 

  return function(className, parentElement) {

    return $(parentElement || document.body).getElementsByClassName(className);

  };

}(Element.Methods);
 

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

Element.ClassNames = Class.create();

Element.ClassNames.prototype = {

  initialize: function(element) {

    this.element = $(element);

  },
 

  _each: function(iterator) {

    this.element.className.split(/\s+/).select(function(name) {

      return name.length > 0;

    })._each(iterator);

  },
 

  set: function(className) {

    this.element.className = className;

  },
 

  add: function(classNameToAdd) {

    if (this.include(classNameToAdd)) return;

    this.set($A(this).concat(classNameToAdd).join(' '));

  },
 

  remove: function(classNameToRemove) {

    if (!this.include(classNameToRemove)) return;

    this.set($A(this).without(classNameToRemove).join(' '));

  },
 

  toString: function() {

    return $A(this).join(' ');

  }

};
 

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

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

Element.addMethods();
 
 

scriptaculous.js:
 

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

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)

// 

// Permission is hereby granted, free of charge, to any person obtaining

// a copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to

// permit persons to whom the Software is furnished to do so, subject to

// the following conditions:

// 

// The above copyright notice and this permission notice shall be

// included in all copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//

// For details, see the script.aculo.us web site: http://script.aculo.us/
 

var Scriptaculous = {

  Version: '1.8.1',

  require: function(libraryName) {

    // inserting via DOM fails in Safari 2.0, so brute force approach

    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');

  },

  REQUIRED_PROTOTYPE: '1.6.0',

  load: function() {

    function convertVersionString(versionString){

      var r = versionString.split('.');

      return parseInt(r[0])*100000 + parseInt(r[1])*1000 + parseInt(r[2]);

    }

 

    if((typeof Prototype=='undefined') || 

       (typeof Element == 'undefined') || 

       (typeof Element.Methods=='undefined') ||

       (convertVersionString(Prototype.Version) < 

        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))

       throw("script.aculo.us requires the Prototype JavaScript framework >= " +

        Scriptaculous.REQUIRED_PROTOTYPE);

    

    $A(document.getElementsByTagName("script")).findAll( function(s) {

      return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))

    }).each( function(s) {

      var path = s.src.replace(/scriptaculous\.js(\?.*)?$/,'');

      var includes = s.src.match(/\?.*load=([a-z,]*)/);

      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(

       function(include) { Scriptaculous.require(path+include+'.js') });

    });

  }

}
 

Scriptaculous.load();
 
 

lightview.js:
 

//  Lightview 2.2.9.2 - 21-05-2008

//  Copyright (c) 2008 Nick Stakenburg (http://www.nickstakenburg.com)

//

//  Licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License

//  http://creativecommons.org/licenses/by-nc-nd/3.0/
 

//  More information on this project:

//  http://www.nickstakenburg.com/projects/lightview/
 

var Lightview = {

  Version: '2.2.9.2',
 

  // Configuration

  options: {

    backgroundColor: '#ffffff',                            // Background color of the view

    border: 12,                                            // Size of the border

    buttons: {

      opacity: {                                           // Opacity of inner buttons

        disabled: 0.4,

        normal: 0.75,

        hover: 1

      },

      side: { display: true },                             // show side buttons

      innerPreviousNext: { display: true },                // show the inner previous and next button

      slideshow: { display: true }                         // show slideshow button

    },

    cyclic: false,                                         // Makes galleries cyclic, no end/begin.

    images: '../images/lightview/',                        // The directory of the images, relative to this file or an absolute url

    imgNumberTemplate: 'Image #{position} of #{total}',    // Want a different language? change it here

    keyboard: { enabled: true },                           // Enabled the keyboard buttons

    overlay: {                                             // Overlay

      background: '#000',                                  // Background color, Mac Firefox & Safari use overlay.png

      close: true,                                         // Overlay click closes the view

      opacity: 0.85,

      display: true

    },

    preloadHover: true,                                    // Preload images on mouseover

    radius: 12,                                            // Corner radius of the border

    removeTitles: true,                                    // Set to false if you want to keep title attributes intact

    resizeDuration: 0.9,                                   // When effects are used, the duration of resizing in seconds

    slideshowDelay: 5,                                     // Seconds to wait before showing the next slide in slideshow

    titleSplit: '::',                                      // The characters you want to split title with

    transition: function(pos) {                            // Or your own transition

      return ((pos/=0.5) < 1 ? 0.5 * Math.pow(pos, 4) :

        -0.5 * ((pos-=2) * Math.pow(pos,3) - 2));

    },

    viewport: true,                                        // Stay within the viewport, true is recommended

    zIndex: 5000,                                          // zIndex of #lightview, #overlay is this -1
 

    // Optional

    closeDimensions: {                                     // If you've changed the close button you can change these

      large: { width: 85, height: 22 },                    // not required but it speeds things up.

      small: { width: 32, height: 22 },

      innertop: { width: 22, height: 22 },

      topclose: { width: 22, height: 18 }                  // when topclose option is used

    },

    defaultOptions : {                                     // Default open dimensions for each type

      ajax:   { width: 400, height: 300 },

      iframe: { width: 400, height: 300, scrolling: true },

      inline: { width: 400, height: 300 },

      flash:  { width: 400, height: 300 },

      quicktime: { width: 480, height: 220, autoplay: true, controls: true, topclose: true }

    },

    sideDimensions: { width: 16, height: 22 }              // see closeDimensions

  },
 

  classids: {

    quicktime: 'clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B',

    flash: 'clsid:D27CDB6E-AE6D-11cf-96B8-444553540000'

  },

  codebases: {

    quicktime: 'http://www.apple.com/qtactivex/qtplugin.cab#version=7,3,0,0',

    flash: 'http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,115,0'

  },

  errors: {

    requiresPlugin: "<div class='message'>The content your are attempting to view requires the <span class='type'>#{type}</span> plugin.</div><div class='pluginspage'><p>Please download and install the required plugin from:</p><a href='#{pluginspage}' target='_blank'>#{pluginspage}</a></div>"

  },

  mimetypes: {

    quicktime: 'video/quicktime',

    flash: 'application/x-shockwave-flash'

  },

  pluginspages: {

    quicktime: 'http://www.apple.com/quicktime/download',

    flash: 'http://www.adobe.com/go/getflashplayer'

  },

  // used with auto detection

  typeExtensions: {

    flash: 'swf',

    image: 'bmp gif jpeg jpg png',

    iframe: 'asp aspx cgi cfm htm html jsp php pl php3 php4 php5 phtml rb rhtml shtml txt',

    quicktime: 'avi mov mpg mpeg movie'

  }

};
 

eval(function(p,a,c,k,e,r){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)r[e(c)]=k[c]||e(c);k=[function(e){return r[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('1d.4s=(h(B){q A=k 4Y("8J ([\\\\d.]+)").81(B);S A?7A(A[1]):-1})(2N.57);10.1h(W.13,{2u:W.13.2w&&(1d.4s>=6&&1d.4s<7),2t:(W.13.3r&&!1f.4h)});10.1h(1d,{7g:"1.6.0.2",9V:"1.8.1",X:{1i:"4R",3j:"12"},6d:!!2N.57.3L(/6b/i),4C:!!2N.57.3L(/6b/i)&&(W.13.3r||W.13.2k),4w:h(A){f((80 2b[A]=="7Q")||(9.4k(2b[A].7H)<9.4k(9["5D"+A]))){7C("1d 7z "+A+" >= "+9["5D"+A]);}},4k:h(A){q B=A.2D(/5u.*|\\./g,"");B=49(B+"0".7b(4-B.21));S A.22("5u")>-1?B-1:B},6X:h(){9.4w("W");f(!!2b.11&&!2b.6R){9.4w("6R")}f(9.m.1g.6D("://")){9.1g=9.m.1g}Z{q A=/12(?:-[\\w\\d.]+)?\\.9g(.*)/;9.1g=(($$("9a 93[1v]").6l(h(B){S 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b0lsc0tt earned 500 total points
ID: 21862616
The obfuscated code will not be easy to make sense of to troubleshoot this.  Hopefully this will help.

How are you trying to use lightview and what effect do you want by loading it as you do?  Instead of using onload in the body tag switch to an anchor tag and link to initiate this.  Does that work in both browsers?

If so try using setTimeout(), a Javascript method, to delay the running of the Lightview.show() method.

Let me know how this works or if you have a question.

bol
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by:b0lsc0tt
ID: 21866993
I'm glad I could help.  Thanks for the grade, the points and the fun question.

bol
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