<!--//--><![CDATA[//><!--	

//Prototype JavaScript framework, version 1.5.0_rc0 (c) 2005 Sam Stephenson <sam@conio.net>
var Prototype = {
  Version: '1.5.0_rc0',
  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',

  emptyFunction: function() {},
  K: function(x) {return x}
}

var Class = {
  create: function() {
    return function() {
      this.initialize.apply(this, arguments);
    }
  }
}

var Abstract = new Object();

Object.extend = function(destination, source) {
  for (var property in source) {
    destination[property] = source[property];
  }
  return destination;
}

Object.inspect = function(object) {
  try {
    if (object == undefined) return 'undefined';
    if (object == null) return 'null';
    return object.inspect ? object.inspect() : object.toString();
  } catch (e) {
    if (e instanceof RangeError) return '...';
    throw e;
  }
}

Function.prototype.bind = function() {
  var __method = this, args = $A(arguments), object = args.shift();
  return function() {
    return __method.apply(object, args.concat($A(arguments)));
  }
}

Function.prototype.bindAsEventListener = function(object) {
  var __method = this;
  return function(event) {
    return __method.call(object, event || window.event);
  }
}

Object.extend(Number.prototype, {
  toColorPart: function() {
    var digits = this.toString(16);
    if (this < 16) return '0' + digits;
    return digits;
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  }
});

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0; i < arguments.length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) {}
    }

    return returnValue;
  }
}

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create();
PeriodicalExecuter.prototype = {
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.callback();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
}
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 += (replacement(match) || '').toString();
        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 = count === undefined ? 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 this;
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = truncation === undefined ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : 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 div = document.createElement('div');
    var text = document.createTextNode(this);
    div.appendChild(text);
    return div.innerHTML;
  },

  unescapeHTML: function() {
    var div = document.createElement('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? div.childNodes[0].nodeValue : '';
  },

  toQueryParams: function() {
    var pairs = this.match(/^\??(.*)$/)[1].split('&');
    return pairs.inject({}, function(params, pairString) {
      var pair = pairString.split('=');
      params[pair[0]] = pair[1];
      return params;
    });
  },

  toArray: function() {
    return this.split('');
  },

  camelize: function() {
    var oStringList = this.split('-');
    if (oStringList.length == 1) return oStringList[0];

    var camelizedString = this.indexOf('-') == 0
      ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
      : oStringList[0];

    for (var i = 1, len = oStringList.length; i < len; i++) {
      var s = oStringList[i];
      camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
    }

    return camelizedString;
  },

  inspect: function() {
    return "'" + this.replace(/\\/g, '\\\\').replace(/'/g, '\\\'') + "'";
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (typeof replacement == 'function') return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
}

String.prototype.parseQuery = String.prototype.toQueryParams;

var Template = Class.create();
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
Template.prototype = {
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern  = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    return this.template.gsub(this.pattern, function(match) {
      var before = match[1];
      if (before == '\\') return match[2];
      return before + (object[match[3]] || '').toString();
    });
  }
}

var $break    = new Object();
var $continue = new Object();

var Enumerable = {
  each: function(iterator) {
    var index = 0;
    try {
      this._each(function(value) {
        try {
          iterator(value, index++);
        } catch (e) {
          if (e != $continue) throw e;
        }
      });
    } catch (e) {
      if (e != $break) throw e;
    }
  },

  all: function(iterator) {
    var result = true;
    this.each(function(value, index) {
      result = result && !!(iterator || Prototype.K)(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator) {
    var result = true;
    this.each(function(value, index) {
      if (result = !!(iterator || Prototype.K)(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function (iterator) {
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(pattern, iterator) {
    var results = [];
    this.each(function(value, index) {
      var stringValue = value.toString();
      if (stringValue.match(pattern))
        results.push((iterator || Prototype.K)(value, index));
    })
    return results;
  },

  include: function(object) {
    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inject: function(memo, iterator) {
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.collect(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator) {
    var result;
    this.each(function(value, index) {
      value = (iterator || Prototype.K)(value, index);
      if (result == undefined || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator) {
    var result;
    this.each(function(value, index) {
      value = (iterator || Prototype.K)(value, index);
      if (result == undefined || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator) {
    var trues = [], falses = [];
    this.each(function(value, index) {
      ((iterator || Prototype.K)(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value, index) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator) {
    return this.collect(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.collect(Prototype.K);
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (typeof args.last() == 'function')
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
}

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray
});
var $A = Array.from = function(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) {
    return iterable.toArray();
  } else {
    var results = [];
    for (var i = 0; i < iterable.length; i++)
      results.push(iterable[i]);
    return results;
  }
}

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; i < this.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 != undefined || value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(value && value.constructor == Array ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  indexOf: function(object) {
    for (var i = 0; i < this.length; i++)
      if (this[i] == object) return i;
    return -1;
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  }
});
var Hash = {
  _each: function(iterator) {
    for (var key in this) {
      var value = this[key];
      if (typeof value == 'function') continue;

      var pair = [key, value];
      pair.key = key;
      pair.value = value;
      iterator(pair);
    }
  },

  keys: function() {
    return this.pluck('key');
  },

  values: function() {
    return this.pluck('value');
  },

  merge: function(hash) {
    return $H(hash).inject($H(this), function(mergedHash, pair) {
      mergedHash[pair.key] = pair.value;
      return mergedHash;
    });
  },

  toQueryString: function() {
    return this.map(function(pair) {
      return pair.map(encodeURIComponent).join('=');
    }).join('&');
  },

  inspect: function() {
    return '#<Hash:{' + this.map(function(pair) {
      return pair.map(Object.inspect).join(': ');
    }).join(', ') + '}>';
  }
}

function $H(object) {
  var hash = Object.extend({}, object || {});
  Object.extend(hash, Enumerable);
  Object.extend(hash, Hash);
  return hash;
}
ObjectRange = Class.create();
Object.extend(ObjectRange.prototype, Enumerable);
Object.extend(ObjectRange.prototype, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    do {
      iterator(value);
      value = value.succ();
    } while (this.include(value));
  },

  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(responderToAdd) {
    if (!this.include(responderToAdd))
      this.responders.push(responderToAdd);
  },

  unregister: function(responderToRemove) {
    this.responders = this.responders.without(responderToRemove);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (responder[callback] && typeof responder[callback] == 'function') {
        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 = function() {};
Ajax.Base.prototype = {
  setOptions: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      parameters:   ''
    }
    Object.extend(this.options, options || {});
  },

  responseIsSuccess: function() {
    return this.transport.status == undefined
        || this.transport.status == 0
        || (this.transport.status >= 200 && this.transport.status < 300);
  },

  responseIsFailure: function() {
    return !this.responseIsSuccess();
  }
}

Ajax.Request = Class.create();
Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
  initialize: function(url, options) {
    this.transport = Ajax.getTransport();
    this.setOptions(options);
    this.request(url);
  },

  request: function(url) {
    var parameters = this.options.parameters || '';
    if (parameters.length > 0) parameters += '&_=';

    try {
      this.url = url;
      if (this.options.method == 'get' && parameters.length > 0)
        this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;

      Ajax.Responders.dispatch('onCreate', this, this.transport);

      this.transport.open(this.options.method, this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) {
        this.transport.onreadystatechange = this.onStateChange.bind(this);
        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
      }

      this.setRequestHeaders();

      var body = this.options.postBody ? this.options.postBody : parameters;
      this.transport.send(this.options.method == 'post' ? body : null);

    } catch (e) {
      this.dispatchException(e);
    }
  },

  setRequestHeaders: function() {
    var requestHeaders =
      ['X-Requested-With', 'XMLHttpRequest',
       'X-Prototype-Version', Prototype.Version,
       'Accept', 'text/javascript, text/html, application/xml, text/xml, */*'];

    if (this.options.method == 'post') {
      requestHeaders.push('Content-type', this.options.contentType);

      /* Force "Connection: close" for Mozilla browsers to work around
       * a bug where XMLHttpReqeuest sends an incorrect Content-length
       * header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType)
        requestHeaders.push('Connection', 'close');
    }

    if (this.options.requestHeaders)
      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);

    for (var i = 0; i < requestHeaders.length; i += 2)
      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState != 1)
      this.respondToReadyState(this.transport.readyState);
  },

  header: function(name) {
    try {
      return this.transport.getResponseHeader(name);
    } catch (e) {}
  },

  evalJSON: function() {
    try {
      return eval('(' + this.header('X-JSON') + ')');
    } catch (e) {}
  },

  evalResponse: function() {
    try {
      return eval(this.transport.responseText);
    } catch (e) {
      this.dispatchException(e);
    }
  },

  respondToReadyState: function(readyState) {
    var event = Ajax.Request.Events[readyState];
    var transport = this.transport, json = this.evalJSON();

    if (event == 'Complete') {
      try {
        (this.options['on' + this.transport.status]
         || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(transport, json);
      } catch (e) {
        this.dispatchException(e);
      }

      if ((this.header('Content-type') || '').match(/^text\/javascript/i))
        this.evalResponse();
    }

    try {
      (this.options['on' + event] || Prototype.emptyFunction)(transport, json);
      Ajax.Responders.dispatch('on' + event, this, transport, json);
    } catch (e) {
      this.dispatchException(e);
    }

    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
    if (event == 'Complete')
      this.transport.onreadystatechange = Prototype.emptyFunction;
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Updater = Class.create();

Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
  initialize: function(container, url, options) {
    this.containers = {
      success: container.success ? $(container.success) : $(container),
      failure: container.failure ? $(container.failure) :
        (container.success ? null : $(container))
    }

    this.transport = Ajax.getTransport();
    this.setOptions(options);

    var onComplete = this.options.onComplete || Prototype.emptyFunction;
    this.options.onComplete = (function(transport, object) {
      this.updateContent();
      onComplete(transport, object);
    }).bind(this);

    this.request(url);
  },

  updateContent: function() {
    var receiver = this.responseIsSuccess() ?
      this.containers.success : this.containers.failure;
    var response = this.transport.responseText;

    if (!this.options.evalScripts)
      response = response.stripScripts();

    if (receiver) {
      if (this.options.insertion) {
        new this.options.insertion(receiver, response);
      } else {
        Element.update(receiver, response);
      }
    }

    if (this.responseIsSuccess()) {
      if (this.onComplete)
        setTimeout(this.onComplete.bind(this), 10);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create();
Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
  initialize: function(container, url, options) {
    this.setOptions(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.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(request) {
    if (this.options.decay) {
      this.decay = (request.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = request.responseText;
    }
    this.timer = setTimeout(this.onTimerEvent.bind(this),
      this.decay * this.frequency * 1000);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $() {
  var results = [], element;
  for (var i = 0; i < arguments.length; i++) {
    element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);
    results.push(Element.extend(element));
  }
  return results.length < 2 ? results[0] : results;
}

document.getElementsByClassName = function(className, parentElement) {
  var children = ($(parentElement) || document.body).getElementsByTagName('*');
  return $A(children).inject([], function(elements, child) {
    if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
      elements.push(Element.extend(child));
    return elements;
  });
}

/*--------------------------------------------------------------------------*/

if (!window.Element)
  var Element = new Object();

Element.extend = function(element) {
  if (!element) return;
  if (_nativeExtensions) return element;

  if (!element._extended && element.tagName && element != window) {
    var methods = Element.Methods, cache = Element.extend.cache;
    for (property in methods) {
      var value = methods[property];
      if (typeof value == 'function')
        element[property] = cache.findOrStore(value);
    }
  }

  element._extended = true;
  return element;
}

Element.extend.cache = {
  findOrStore: function(value) {
    return this[value] = this[value] || function() {
      return value.apply(null, [this].concat($A(arguments)));
    }
  }
}

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function() {
    for (var i = 0; i < arguments.length; i++) {
      var element = $(arguments[i]);
      Element[Element.visible(element) ? 'hide' : 'show'](element);
    }
  },

  hide: function() {
    for (var i = 0; i < arguments.length; i++) {
      var element = $(arguments[i]);
      element.style.display = 'none';
    }
  },

  show: function() {
    for (var i = 0; i < arguments.length; i++) {
      var element = $(arguments[i]);
      element.style.display = '';
    }
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
  },

  update: function(element, html) {
    $(element).innerHTML = html.stripScripts();
    setTimeout(function() {html.evalScripts()}, 10);
  },

  replace: function(element, html) {
    element = $(element);
    if (element.outerHTML) {
      element.outerHTML = html.stripScripts();
    } else {
      var range = element.ownerDocument.createRange();
      range.selectNodeContents(element);
      element.parentNode.replaceChild(
        range.createContextualFragment(html.stripScripts()), element);
    }
    setTimeout(function() {html.evalScripts()}, 10);
  },

  getHeight: function(element) {
    element = $(element);
    return element.offsetHeight;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    return Element.classNames(element).include(className);
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    return Element.classNames(element).add(className);
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    return Element.classNames(element).remove(className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    for (var i = 0; i < element.childNodes.length; i++) {
      var node = element.childNodes[i];
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        Element.remove(node);
    }
  },

  empty: function(element) {
    return $(element).innerHTML.match(/^\s*$/);
  },

  childOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    while (element = element.parentNode)
      if (element == ancestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var x = element.x ? element.x : element.offsetLeft,
        y = element.y ? element.y : element.offsetTop;
    window.scrollTo(x, y);
  },

  getStyle: function(element, style) {
    element = $(element);
    var value = element.style[style.camelize()];
    if (!value) {
      if (document.defaultView && document.defaultView.getComputedStyle) {
        var css = document.defaultView.getComputedStyle(element, null);
        value = css ? css.getPropertyValue(style) : null;
      } else if (element.currentStyle) {
        value = element.currentStyle[style.camelize()];
      }
    }

    if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
      if (Element.getStyle(element, 'position') == 'static') value = 'auto';

    return value == 'auto' ? null : value;
  },

  setStyle: function(element, style) {
    element = $(element);
    for (var name in style)
      element.style[name.camelize()] = style[name];
  },

  getDimensions: function(element) {
    element = $(element);
    if (Element.getStyle(element, 'display') != 'none')
      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;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = '';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = 'none';
    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;
      }
    }
  },

  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 = '';
    }
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return;
    element._overflow = element.style.overflow;
    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
      element.style.overflow = 'hidden';
  },

  undoClipping: function(element) {
    element = $(element);
    if (element._overflow) return;
    element.style.overflow = element._overflow;
    element._overflow = undefined;
  }
}

Object.extend(Element, Element.Methods);

var _nativeExtensions = false;

if(!HTMLElement && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
  var HTMLElement = {}
  HTMLElement.prototype = document.createElement('div').__proto__;
}

Element.addMethods = function(methods) {
  Object.extend(Element.Methods, methods || {});

  if(typeof HTMLElement != 'undefined') {
    var methods = Element.Methods, cache = Element.extend.cache;
    for (property in methods) {
      var value = methods[property];
      if (typeof value == 'function')
        HTMLElement.prototype[property] = cache.findOrStore(value);
    }
    _nativeExtensions = true;
  }
}

Element.addMethods();

var Toggle = new Object();
Toggle.display = Element.toggle;

/*--------------------------------------------------------------------------*/

Abstract.Insertion = function(adjacency) {
  this.adjacency = adjacency;
}

Abstract.Insertion.prototype = {
  initialize: function(element, content) {
    this.element = $(element);
    this.content = content.stripScripts();

    if (this.adjacency && this.element.insertAdjacentHTML) {
      try {
        this.element.insertAdjacentHTML(this.adjacency, this.content);
      } catch (e) {
        var tagName = this.element.tagName.toLowerCase();
        if (tagName == 'tbody' || tagName == 'tr') {
          this.insertContent(this.contentFromAnonymousTable());
        } else {
          throw e;
        }
      }
    } else {
      this.range = this.element.ownerDocument.createRange();
      if (this.initializeRange) this.initializeRange();
      this.insertContent([this.range.createContextualFragment(this.content)]);
    }

    setTimeout(function() {content.evalScripts()}, 10);
  },

  contentFromAnonymousTable: function() {
    var div = document.createElement('div');
    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
    return $A(div.childNodes[0].childNodes[0].childNodes);
  }
}

var Insertion = new Object();

Insertion.Before = Class.create();
Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
  initializeRange: function() {
    this.range.setStartBefore(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.parentNode.insertBefore(fragment, this.element);
    }).bind(this));
  }
});

Insertion.Top = Class.create();
Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
  initializeRange: function() {
    this.range.selectNodeContents(this.element);
    this.range.collapse(true);
  },

  insertContent: function(fragments) {
    fragments.reverse(false).each((function(fragment) {
      this.element.insertBefore(fragment, this.element.firstChild);
    }).bind(this));
  }
});

Insertion.Bottom = Class.create();
Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
  initializeRange: function() {
    this.range.selectNodeContents(this.element);
    this.range.collapse(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.appendChild(fragment);
    }).bind(this));
  }
});

Insertion.After = Class.create();
Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
  initializeRange: function() {
    this.range.setStartAfter(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.parentNode.insertBefore(fragment,
        this.element.nextSibling);
    }).bind(this));
  }
});

/*--------------------------------------------------------------------------*/

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(this.toArray().concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set(this.select(function(className) {
      return className != classNameToRemove;
    }).join(' '));
  },

  toString: function() {
    return this.toArray().join(' ');
  }
}

Object.extend(Element.ClassNames.prototype, Enumerable);
var Selector = Class.create();
Selector.prototype = {
  initialize: function(expression) {
    this.params = {classNames: []};
    this.expression = expression.toString().strip();
    this.parseExpression();
    this.compileMatcher();
  },

  parseExpression: function() {
    function abort(message) { throw 'Parse error in selector: ' + message; }

    if (this.expression == '')  abort('empty expression');

    var params = this.params, expr = this.expression, match, modifier, clause, rest;
    while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
      params.attributes = params.attributes || [];
      params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
      expr = match[1];
    }

    if (expr == '*') return this.params.wildcard = true;

    while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
      modifier = match[1], clause = match[2], rest = match[3];
      switch (modifier) {
        case '#':       params.id = clause; break;
        case '.':       params.classNames.push(clause); break;
        case '':
        case undefined: params.tagName = clause.toUpperCase(); break;
        default:        abort(expr.inspect());
      }
      expr = rest;
    }

    if (expr.length > 0) abort(expr.inspect());
  },

  buildMatchExpression: function() {
    var params = this.params, conditions = [], clause;

    if (params.wildcard)
      conditions.push('true');
    if (clause = params.id)
      conditions.push('element.id == ' + clause.inspect());
    if (clause = params.tagName)
      conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
    if ((clause = params.classNames).length > 0)
      for (var i = 0; i < clause.length; i++)
        conditions.push('Element.hasClassName(element, ' + clause[i].inspect() + ')');
    if (clause = params.attributes) {
      clause.each(function(attribute) {
        var value = 'element.getAttribute(' + attribute.name.inspect() + ')';
        var splitValueBy = function(delimiter) {
          return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
        }

        switch (attribute.operator) {
          case '=':       conditions.push(value + ' == ' + attribute.value.inspect()); break;
          case '~=':      conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
          case '|=':      conditions.push(
                            splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
                          ); break;
          case '!=':      conditions.push(value + ' != ' + attribute.value.inspect()); break;
          case '':
          case undefined: conditions.push(value + ' != null'); break;
          default:        throw 'Unknown operator ' + attribute.operator + ' in selector';
        }
      });
    }

    return conditions.join(' && ');
  },

  compileMatcher: function() {
    this.match = new Function('element', 'if (!element.tagName) return false; \
      return ' + this.buildMatchExpression());
  },

  findElements: function(scope) {
    var element;

    if (element = $(this.params.id))
      if (this.match(element))
        if (!scope || Element.childOf(element, scope))
          return [element];

    scope = (scope || document).getElementsByTagName(this.params.tagName || '*');

    var results = [];
    for (var i = 0; i < scope.length; i++)
      if (this.match(element = scope[i]))
        results.push(Element.extend(element));

    return results;
  },

  toString: function() {
    return this.expression;
  }
}

function $$() {
  return $A(arguments).map(function(expression) {
    return expression.strip().split(/\s+/).inject([null], function(results, expr) {
      var selector = new Selector(expr);
      return results.map(selector.findElements.bind(selector)).flatten();
    });
  }).flatten();
}
var Field = {
  clear: function() {
    for (var i = 0; i < arguments.length; i++)
      $(arguments[i]).value = '';
  },

  focus: function(element) {
    $(element).focus();
  },

  present: function() {
    for (var i = 0; i < arguments.length; i++)
      if ($(arguments[i]).value == '') return false;
    return true;
  },

  select: function(element) {
    $(element).select();
  },

  activate: function(element) {
    element = $(element);
    element.focus();
    if (element.select)
      element.select();
  }
}

/*--------------------------------------------------------------------------*/

var Form = {
  serialize: function(form) {
    var elements = Form.getElements($(form));
    var queryComponents = new Array();

    for (var i = 0; i < elements.length; i++) {
      var queryComponent = Form.Element.serialize(elements[i]);
      if (queryComponent)
        queryComponents.push(queryComponent);
    }

    return queryComponents.join('&');
  },

  getElements: function(form) {
    form = $(form);
    var elements = new Array();

    for (var tagName in Form.Element.Serializers) {
      var tagElements = form.getElementsByTagName(tagName);
      for (var j = 0; j < tagElements.length; j++)
        elements.push(tagElements[j]);
    }
    return elements;
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name)
      return inputs;

    var matchingInputs = new Array();
    for (var i = 0; i < inputs.length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) ||
          (name && input.name != name))
        continue;
      matchingInputs.push(input);
    }

    return matchingInputs;
  },

  disable: function(form) {
    var elements = Form.getElements(form);
    for (var i = 0; i < elements.length; i++) {
      var element = elements[i];
      element.blur();
      element.disabled = 'true';
    }
  },

  enable: function(form) {
    var elements = Form.getElements(form);
    for (var i = 0; i < elements.length; i++) {
      var element = elements[i];
      element.disabled = '';
    }
  },

  findFirstElement: function(form) {
    return Form.getElements(form).find(function(element) {
      return element.type != 'hidden' && !element.disabled &&
        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    Field.activate(Form.findFirstElement(form));
  },

  reset: function(form) {
    $(form).reset();
  }
}

Form.Element = {
  serialize: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    var parameter = Form.Element.Serializers[method](element);

    if (parameter) {
      var key = encodeURIComponent(parameter[0]);
      if (key.length == 0) return;

      if (parameter[1].constructor != Array)
        parameter[1] = [parameter[1]];

      return parameter[1].map(function(value) {
        return key + '=' + encodeURIComponent(value);
      }).join('&');
    }
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    var parameter = Form.Element.Serializers[method](element);

    if (parameter)
      return parameter[1];
  }
}

Form.Element.Serializers = {
  input: function(element) {
    switch (element.type.toLowerCase()) {
      case 'submit':
      case 'hidden':
      case 'password':
      case 'text':
        return Form.Element.Serializers.textarea(element);
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element);
    }
    return false;
  },

  inputSelector: function(element) {
    if (element.checked)
      return [element.name, element.value];
  },

  textarea: function(element) {
    return [element.name, element.value];
  },

  select: function(element) {
    return Form.Element.Serializers[element.type == 'select-one' ?
      'selectOne' : 'selectMany'](element);
  },

  selectOne: function(element) {
    var value = '', opt, index = element.selectedIndex;
    if (index >= 0) {
      opt = element.options[index];
      value = opt.value || opt.text;
    }
    return [element.name, value];
  },

  selectMany: function(element) {
    var value = [];
    for (var i = 0; i < element.length; i++) {
      var opt = element.options[i];
      if (opt.selected)
        value.push(opt.value || opt.text);
    }
    return [element.name, value];
  }
}

/*--------------------------------------------------------------------------*/

var $F = Form.Element.getValue;

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = function() {}
Abstract.TimedObserver.prototype = {
  initialize: function(element, frequency, callback) {
    this.frequency = frequency;
    this.element   = $(element);
    this.callback  = callback;

    this.lastValue = this.getValue();
    this.registerCallback();
  },

  registerCallback: function() {
    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  onTimerEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
}

Form.Element.Observer = Class.create();
Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create();
Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = function() {}
Abstract.EventObserver.prototype = {
  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() {
    var elements = Form.getElements(this.element);
    for (var i = 0; i < elements.length; i++)
      this.registerCallback(elements[i]);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        case 'password':
        case 'text':
        case 'textarea':
        case 'select-one':
        case 'select-multiple':
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
}

Form.Element.EventObserver = Class.create();
Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create();
Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) {
  var Event = new Object();
}

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,

  element: function(event) {
    return event.target || event.srcElement;
  },

  isLeftClick: function(event) {
    return (((event.which) && (event.which == 1)) ||
            ((event.button) && (event.button == 1)));
  },

  pointerX: function(event) {
    return event.pageX || (event.clientX +
      (document.documentElement.scrollLeft || document.body.scrollLeft));
  },

  pointerY: function(event) {
    return event.pageY || (event.clientY +
      (document.documentElement.scrollTop || document.body.scrollTop));
  },

  stop: function(event) {
    if (event.preventDefault) {
      event.preventDefault();
      event.stopPropagation();
    } else {
      event.returnValue = false;
      event.cancelBubble = true;
    }
  },

  // find the first node with the given tagName, starting from the
  // node the event was triggered on; traverses the DOM upwards
  findElement: function(event, tagName) {
    var element = Event.element(event);
    while (element.parentNode && (!element.tagName ||
        (element.tagName.toUpperCase() != tagName.toUpperCase())))
      element = element.parentNode;
    return element;
  },

  observers: false,

  _observeAndCache: function(element, name, observer, useCapture) {
    if (!this.observers) this.observers = [];
    if (element.addEventListener) {
      this.observers.push([element, name, observer, useCapture]);
      element.addEventListener(name, observer, useCapture);
    } else if (element.attachEvent) {
      this.observers.push([element, name, observer, useCapture]);
      element.attachEvent('on' + name, observer);
    }
  },

  unloadCache: function() {
    if (!Event.observers) return;
    for (var i = 0; i < Event.observers.length; i++) {
      Event.stopObserving.apply(this, Event.observers[i]);
      Event.observers[i][0] = null;
    }
    Event.observers = false;
  },

  observe: function(element, name, observer, useCapture) {
    var element = $(element);
    useCapture = useCapture || false;

    if (name == 'keypress' &&
        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
        || element.attachEvent))
      name = 'keydown';

    this._observeAndCache(element, name, observer, useCapture);
  },

  stopObserving: function(element, name, observer, useCapture) {
    var element = $(element);
    useCapture = useCapture || false;

    if (name == 'keypress' &&
        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
        || element.detachEvent))
      name = 'keydown';

    if (element.removeEventListener) {
      element.removeEventListener(name, observer, useCapture);
    } else if (element.detachEvent) {
      element.detachEvent('on' + name, observer);
    }
  }
});

/* prevent memory leaks in IE */
if (navigator.appVersion.match(/\bMSIE\b/))
  Event.observe(window, 'unload', Event.unloadCache, false);
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;
  },

  realOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return [valueL, valueT];
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return [valueL, valueT];
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        p = Element.getStyle(element, 'position');
        if (p == 'relative' || p == 'absolute') break;
      }
    } while (element);
    return [valueL, valueT];
  },

  offsetParent: 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;
  },

  // 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 = this.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 = this.realOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = this.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;
  },

  clone: function(source, target) {
    source = $(source);
    target = $(target);
    target.style.position = 'absolute';
    var offsets = this.cumulativeOffset(source);
    target.style.top    = offsets[1] + 'px';
    target.style.left   = offsets[0] + 'px';
    target.style.width  = source.offsetWidth + 'px';
    target.style.height = source.offsetHeight + 'px';
  },

  page: 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)
        if (Element.getStyle(element,'position')=='absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      valueT -= element.scrollTop  || 0;
      valueL -= element.scrollLeft || 0;
    } while (element = element.parentNode);

    return [valueL, valueT];
  },

  clone: function(source, target) {
    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 = Position.page(source);

    // find coordinate system to use
    target = $(target);
    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(target,'position') == 'absolute') {
      parent = Position.offsetParent(target);
      delta = Position.page(parent);
    }

    // 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)   target.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if(options.setTop)    target.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if(options.setWidth)  target.style.width = source.offsetWidth + 'px';
    if(options.setHeight) target.style.height = source.offsetHeight + 'px';
  },

  absolutize: function(element) {
    element = $(element);
    if (element.style.position == 'absolute') return;
    Position.prepare();

    var offsets = Position.positionedOffset(element);
    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';;
  },

  relativize: function(element) {
    element = $(element);
    if (element.style.position == 'relative') return;
    Position.prepare();

    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;
  }
}

// Safari returns margins on body which is incorrect if the child is absolutely
// positioned.  For performance reasons, redefine Position.cumulativeOffset for
// KHTML/WebKit only.
if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
  Position.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 [valueL, valueT];
  }
}

// Copyright (c) 2006 S�bastien Gruhier (http://xilinus.com, http://itseb.com) 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. VERSION 0.95
var Window = Class.create();
Window.prototype = {
	initialize: function(id) {
		this.hasEffectLib = String.prototype.parseColor != null;
		this.options = Object.extend({
			className: "dialog",
			minWidth: 100,
			minHeight: 20,
			resizable: true,
			closable: true,
			minimizable: true,
			maximizable: true,
			draggable: true,
			userData: null,
			showEffect: (this.hasEffectLib ? Effect.Appear : Element.show),
			hideEffect: (this.hasEffectLib ? Effect.Fade : Element.hide),
			showEffectOptions: {},
			hideEffectOptions: {},
			effectOptions: null,
			parent: document.getElementsByTagName("body").item(0),
			title: "&nbsp;",
			url: null,
			onload: Prototype.emptyFunction,
			width: 200,
			height: 300,
			opacity: 1}, arguments[1] || {});

	  if (this.options.effectOptions) {
	    Object.extend(this.options.hideEffectOptions, this.options.effectOptions);
	    Object.extend(this.options.showEffectOptions, this.options.effectOptions);
	  }
		if (this.options.hideEffect == Element.hide)
		  this.options.hideEffect = function(){ Element.hide(this.element); if (this.destroyOnClose) this.destroy(); }.bind(this)
		  
		this.element = this._createWindow(id);
		
		// Bind event listener
    this.eventMouseDown = this._initDrag.bindAsEventListener(this);
  	this.eventMouseUp   = this._endDrag.bindAsEventListener(this);
  	this.eventMouseMove = this._updateDrag.bindAsEventListener(this);
  	this.eventKeyPress  = this._keyPress.bindAsEventListener(this);
  	this.eventOnLoad    = this._getWindowBorderSize.bindAsEventListener(this);
    this.eventMouseDownContent = this.toFront.bindAsEventListener(this);
 
		this.topbar = $(this.element.id + "_top");
		this.bottombar = $(this.element.id + "_bottom");
    this.content = $(this.element.id + "_content");
    
		Event.observe(this.topbar, "mousedown", this.eventMouseDown);
		Event.observe(this.bottombar, "mousedown", this.eventMouseDown);
		Event.observe(this.content, "mousedown", this.eventMouseDownContent);
		Event.observe(window, "load", this.eventOnLoad);
		
		if (this.options.draggable)  {
			this.bottombar.addClassName("bottom_draggable");
			this.topbar.addClassName("top_draggable");
    }		
    
		if (this.options.resizable) {
			this.sizer = $(this.element.id + "_sizer");
    	Event.observe(this.sizer, "mousedown", this.eventMouseDown);
    }	
    
    this.useLeft = null;
    this.useTop = null;
		if (arguments[1].left != null) {
			this.element.setStyle({left: parseFloat(arguments[1].left) + 'px'});
			this.useLeft = true;
		}
		if (arguments[1].right != null) {
			this.element.setStyle({right: parseFloat(arguments[1].right) + 'px'});
			this.useLeft = false;
		}
    if (this.useLeft == null) {
	    this.element.setStyle({left: "0px"});
			this.useLeft = true;
    }
    
		if (arguments[1].top != null) {
			this.element.setStyle({top: parseFloat(arguments[1].top) + 'px'});
			this.useTop = true;
		}
		if (arguments[1].bottom != null) {
			this.element.setStyle({bottom: parseFloat(arguments[1].bottom) + 'px'});			
			this.useTop = false;
		}
    if (this.useTop == null) {
			this.element.setStyle({top: "0px"});
			this.useTop = true;
    }

    this.storedLocation = null;
    
		this.setOpacity(this.options.opacity);
		if (arguments[1].zIndex)
			this.setZIndex(arguments[1].zIndex)

		this.destroyOnClose = false;

    this._getWindowBorderSize();
		this.setSize(this.options.width, this.options.height);
		this.setTitle(this.options.title)
		Windows.register(this);	    
  },
  
	// Destructor
 	destroy: function() {
		Windows.notify("onDestroy", this);
		
  	Event.stopObserving(this.topbar, "mousedown", this.eventMouseDown);
  	Event.stopObserving(this.bottombar, "mousedown", this.eventMouseDown);
  	Event.stopObserving(this.content, "mousedown", this.eventMouseDownContent);
    
		Event.stopObserving(window, "load", this.eventOnLoad);
		Event.stopObserving(this.content, "load", this.options.onload);

		if (this.sizer)
    		Event.stopObserving(this.sizer, "mousedown", this.eventMouseDown);

		if (this.options.url)
		  this.content.src = null

	 	if(this.iefix) 
			Element.remove(this.iefix);

    Element.remove(this.element);
		Windows.unregister(this);	    
	},
  	
	// Sets window deleagte, should have functions: "canClose(window)" 
	setDelegate: function(delegate) {
		this.delegate = delegate
	},
	
	// Gets current window delegate
	getDelegate: function() {
		return this.delegate;
	},
	
	// Gets window content
	getContent: function () {
		return this.content;
	},
	
	// Sets the content with an element id
	setContent: function(id, autoresize, autoposition) {
		var d = null;
		var p = null;

		if (autoresize) 
			d = Element.getDimensions(id);
		if (autoposition) 
			p = Position.cumulativeOffset($(id));

		var content = this.getContent()
		content.appendChild($(id));
		$(id).show();
		if (autoresize) 
			this.setSize(d.width, d.height);
		if (autoposition) 
		  this.setLocation(p[1] - this.heightN, p[0] - this.widthW);	  
	},

	// Gets window ID
	getId: function() {
		return this.element.id;
	},
	
	// Detroys itself when closing 
	setDestroyOnClose: function() {
	  Object.extend(this.options.hideEffectOptions, {afterFinish:  this.destroy.bind(this)});
		this.destroyOnClose = true;
	},
	
	// initDrag event
	_initDrag: function(event) {
    // Get pointer X,Y
  	this.pointer = [Event.pointerX(event), Event.pointerY(event)];

    // Resize
		if (Event.element(event) == this.sizer) {
			this.doResize = true;
    	this.widthOrg = this.width;
    	this.heightOrg = this.height;
    	this.bottomOrg = parseFloat(this.element.getStyle('bottom'));
    	this.rightOrg = parseFloat(this.element.getStyle('right'));
			Windows.notify("onStartResize", this);
		}
    else {
		  this.doResize = false;

  		// Check if click on close button, 
  		var closeButton = $(this.getId() + '_close');
  		if (closeButton && Position.within(closeButton, this.pointer[0], this.pointer[1])) 
  			return;

  		this.toFront();

  		if (! this.options.draggable) 
  		  return;
  		Windows.notify("onStartMove", this);
    }  	
  	// Register global event to capture mouseUp and mouseMove
  	Event.observe(document, "mouseup", this.eventMouseUp, false);
    Event.observe(document, "mousemove", this.eventMouseMove, false);
		
  	// Add an invisible div to keep catching mouse event over iframes
  	WindowUtilities.disableScreen('__invisible__', '__invisible__', false);

    // Stop selection while dragging
    document.body.ondrag = function () { return false; };
    document.body.onselectstart = function () { return false; };
    
    Event.stop(event);
  },

  // updateDrag event
	_updateDrag: function(event) {
   	var pointer = [Event.pointerX(event), Event.pointerY(event)];    
		var dx = pointer[0] - this.pointer[0];
		var dy = pointer[1] - this.pointer[1];
		
		// Resize case, update width/height
		if (this.doResize) {
			this.setSize(this.widthOrg + dx , this.heightOrg + dy);
			
      dx = this.width - this.widthOrg
      dy = this.height - this.heightOrg
			
		  // Check if it's a right position, update it to keep upper-left corner at the same position
			if (! this.useLeft) 
				this.element.setStyle({right: (this.rightOrg -dx) + 'px'});
			// Check if it's a bottom position, update it to keep upper-left corner at the same position
			if (! this.useTop) 
				this.element.setStyle({bottom: (this.bottomOrg -dy) + 'px'});
		}
		// Move case, update top/left
		else {
		  this.pointer = pointer;
  		
			if (this.useLeft) 
				this.element.setStyle({left: parseFloat(this.element.getStyle('left')) + dx + 'px'});
			else 
				this.element.setStyle({right: parseFloat(this.element.getStyle('right')) - dx + 'px'});
			
			if (this.useTop) 
				this.element.setStyle({top: parseFloat(this.element.getStyle('top')) + dy + 'px'});
		  else 
				this.element.setStyle({bottom: parseFloat(this.element.getStyle('bottom')) - dy + 'px'});
		}
		if (this.iefix) 
			this._fixIEOverlapping(); 
			
		this._removeStoreLocation();
    Event.stop(event);
	},

	 // endDrag callback
 	_endDrag: function(event) {
		// Remove temporary div over iframes
 	  WindowUtilities.enableScreen('__invisible__');
		
		if (this.doResize)
			Windows.notify("onEndResize", this);
		else
			Windows.notify("onEndMove", this);
		
		// Release event observing
		Event.stopObserving(document, "mouseup", this.eventMouseUp,false);
    Event.stopObserving(document, "mousemove", this.eventMouseMove, false);

    Event.stop(event);
    
    // Restore selection
    document.body.ondrag = null;
    document.body.onselectstart = null;
  },

	_keyPress: function(event) {
		//Dialog.cancelCallback();
	},
	
	// Creates HTML window code
	_createWindow: function(id) {
	  var className = this.options.className;
		var win = document.createElement("div");
		win.setAttribute('id', id);
		win.className = "dialog";

		var content;
		if (this.options.url)
			content= "<IFRAME frameborder=\"0\" allowtransparency=\"true\" name=\"" + id + "_content\"  id=\"" + id + "_content\" SRC=\"" + this.options.url + "\"> </IFRAME>";
		else
			content ="<DIV id=\"" + id + "_content\" class=\"" +className + "_content\"> </DIV>";
			
		var closeDiv = this.options.closable ? "<div class='"+ className +"_close' id='"+ id +"_close' onclick='Windows.close(\""+ id +"\")'> </div>" : "";
		var minDiv = this.options.minimizable ? "<div class='"+ className + "_minimize' id='"+ id +"_minimize' onclick='Windows.minimize(\""+ id +"\")'> </div>" : "";
		var maxDiv = this.options.maximizable ? "<div class='"+ className + "_maximize' id='"+ id +"_maximize' onclick='Windows.maximize(\""+ id +"\")'> </div>" : "";
		var seAttributes = this.options.resizable ? "class='" + className + "_sizer' id='" + id + "_sizer'" : "class='"  + className + "_se'";
		
    win.innerHTML = closeDiv + minDiv + maxDiv + "\
      <table id='"+ id +"_row1' class=\"top table_window\">\
        <tr>\
          <td class='"+ className +"_nw'>&nbsp;</td>\
          <td class='"+ className +"_n'><div id='"+ id +"_top' class='"+ className +"_title title_window'>"+ this.options.title +"</div></td>\
          <td class='"+ className +"_ne'>&nbsp;</td>\
        </tr>\
      </table>\
      <table id='"+ id +"_row2' class=\"mid table_window\">\
        <tr>\
          <td class='"+ className +"_w'></td>\
            <td id='"+ id +"_table_content' class='"+ className +"_content' valign='top'>"+ content +"</td>\
          <td class='"+ className +"_e'></td>\
        </tr>\
      </table>\
        <table id='"+ id +"_row3' class=\"bot table_window\">\
        <tr>\
          <td class='"+ className +"_sw'>&nbsp;</td>\
            <td class='"+ className +"_s'><div id='"+ id +"_bottom' class='status_bar'>&nbsp;</div></td>\
            <td " + seAttributes + ">&nbsp;</td>\
        </tr>\
      </table>\
    ";
    
		Element.hide(win);
		this.options.parent.insertBefore(win, this.options.parent.firstChild);
		Event.observe($(id + "_content"), "load", this.options.onload);
		return win;
	},
	
	// Sets window location
	setLocation: function(top, left) {
	  if (top < 0)
	    top = 0;
    if (left < 0)
      left= 0
		this.element.setStyle({top: top + 'px'});
		this.element.setStyle({left: left + 'px'});
		this.useLeft = true;
		this.useTop = true;
	},
		
	// Gets window size
	getSize: function() {
	  return {width: width, height: height};
	},
		
	// Sets window size
	setSize: function(width, height) {    
	  width = parseFloat(width);
	  height = parseFloat(height);
	  
		// Check min and max size
		if (width < this.options.minWidth)
			width = this.options.minWidth;

		if (height < this.options.minHeight)
			height = this.options.minHeight;
			
		if (this.options. maxHeight && height > this.options. maxHeight)
			height = this.options. maxHeight;

		if (this.options. maxWidth && width > this.options. maxWidth)
			width = this.options. maxWidth;

  	this.width = width;
		this.height = height;
		this.element.setStyle({width: width + this.widthW + this.widthE + "px"})
		this.element.setStyle({height: height  + this.heightN + this.heightS + "px"})

		// Update content height
		var content = $(this.element.id + '_content')
		content.setStyle({height: height  + 'px'});
		content.setStyle({width: width  + 'px'});
	},
	
	// Brings window to front
	toFront: function() {
    this.setZIndex(Windows.maxZIndex + 20);
	},
	
	// Displays window modal state or not
	show: function(modal) {
		if (modal) {
			WindowUtilities.disableScreen(this.options.className);
			this.modal = true;			
			this.setZIndex(Windows.maxZIndex + 20);
			Windows.unsetOverflow(this);
			Event.observe(document, "keypress", this.eventKeyPress);	      	
		}
		
		// To restore overflow if need be
		if (this.oldStyle)
		  this.getContent().setStyle({overflow: this.oldStyle});
			
		this.setSize(this.width, this.height);
		if (this.options.showEffect != Element.show && this.options.showEffectOptions )
			this.options.showEffect(this.element, this.options.showEffectOptions);	
		else
			this.options.showEffect(this.element);	
			
    this._checkIEOverlapping();
	},
	
	// Displays window modal state or not at the center of the page
	showCenter: function(modal) {
		this.setSize(this.width, this.height);
		this._center();
		
		this.show(modal);
	},
	
	_center: function() {
		var windowScroll = WindowUtilities.getWindowScroll();    
		var pageSize = WindowUtilities.getPageSize();    

    this.setLocation(windowScroll.top + (pageSize.windowHeight - (this.height + this.heightN + this.heightS))/2, 
                     windowScroll.left + (pageSize.windowWidth - (this.width + this.widthW + this.widthE))/2);
    this.toFront();
	},
	
	// Hides window
	hide: function() {
		if (this.modal) {
			WindowUtilities.enableScreen();
			Windows.resetOverflow();
			Event.stopObserving(document, "keypress", this.eventKeyPress);			
		}
		// To avoid bug on scrolling bar
	  this.oldStyle = this.getContent().getStyle('overflow');
		this.getContent().setStyle({overflow: "hidden"});

		this.options.hideEffect(this.element, this.options.hideEffectOptions);	

	 	if(this.iefix) 
			this.iefix.hide();
	},

  minimize: function() {
    var r2 = $(this.getId() + "_row2");
    var dh = r2.getDimensions().height;
    
    if (r2.visible()) {
      var h  = this.element.getHeight() - dh
      r2.hide()
  		this.element.setStyle({height: h + "px"})
  		if (! this.useTop) {
  		  var bottom = parseFloat(this.element.getStyle('bottom'));
			  this.element.setStyle({bottom: (bottom + dh) + 'px'});
		  }
    } 
    else {
      var h  = this.element.getHeight() + dh;
      this.element.setStyle({height: h + "px"})
  		if (! this.useTop) {
  		  var bottom = parseFloat(this.element.getStyle('bottom'));
			  this.element.setStyle({bottom: (bottom - dh) + 'px'});
		  }
      r2.show();
  		
      this.toFront();
    }
    Windows.notify("onMinimize", this);
  },
  
  maximize: function() {
    if (this.storedLocation != null) {
      this._restoreLocation();
      if(this.iefix) 
  			this.iefix.hide();
    }
    else {
      this._storeLocation();
      Windows.unsetOverflow(this);
      
      var windowScroll = WindowUtilities.getWindowScroll();
  		var pageSize = WindowUtilities.getPageSize();    

			this.element.setStyle(this.useLeft ? {left: windowScroll.left} : {right: windowScroll.left});
  		this.element.setStyle(this.useTop ? {top: windowScroll.top} : {bottom: windowScroll.top});

      this.setSize(pageSize.windowWidth - this.widthW - this.widthE, pageSize.windowHeight - this.heightN - this.heightS)
      this.toFront();
      if (this.iefix) 
  			this._fixIEOverlapping(); 
    }
		Windows.notify("onMaximize", this);
  },
  
  isMinimized: function() {
    var r2 = $(this.getId() + "_row2");
    return !r2.visible();
  },
  
  isMaximized: function() {
    return (this.storedLocation != null);
  },
  
	setOpacity: function(opacity) {
		if (Element.setOpacity)
			Element.setOpacity(this.element, opacity);
	},
	
	setZIndex: function(zindex) {
		this.element.setStyle({zIndex: zindex});
		Windows.updateZindex(zindex, this);
	},

  setTitle: function(newTitle) {
  	if (!newTitle || newTitle == "") 
  	  newTitle = "&nbsp;";
  	  
  	Element.update(this.element.id + '_top', newTitle);
  },

	setStatusBar: function(element) {
		var statusBar = $(this.getId() + "_bottom");

    if (typeof(element) == "object") {
      if (this.bottombar.firstChild)
        this.bottombar.replaceChild(element, this.bottombar.firstChild);
      else
        this.bottombar.appendChild(element);
    }
    else
		  this.bottombar.innerHTML = element;
	},

	_checkIEOverlapping: function() {
    if(!this.iefix && (navigator.appVersion.indexOf('MSIE')>0) && (navigator.userAgent.indexOf('Opera')<0) && (this.element.getStyle('position')=='absolute')) {
        new Insertion.After(this.element.id, '<iframe id="' + this.element.id + '_iefix" '+ 'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' + 'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
        this.iefix = $(this.element.id+'_iefix');
    }
    if(this.iefix) 
			setTimeout(this._fixIEOverlapping.bind(this), 50);
	},

	_fixIEOverlapping: function() {
	    Position.clone(this.element, this.iefix);
	    this.iefix.style.zIndex = this.element.style.zIndex - 1;
	    this.iefix.show();
	},
	
	_getWindowBorderSize: function(event) {
    // Hack to get real window border size!!
    var div = this._createHiddenDiv(this.options.className + "_n")
		this.heightN = Element.getDimensions(div).height;		
		div.parentNode.removeChild(div)

    var div = this._createHiddenDiv(this.options.className + "_s")
		this.heightS = Element.getDimensions(div).height;		
		div.parentNode.removeChild(div)

    var div = this._createHiddenDiv(this.options.className + "_e")
		this.widthE = Element.getDimensions(div).width;		
		div.parentNode.removeChild(div)

    var div = this._createHiddenDiv(this.options.className + "_w")
		this.widthW = Element.getDimensions(div).width;
		div.parentNode.removeChild(div);
		// Safari size fix
		if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
		  this.setSize(this.width, this.height);
		if (this.doMaximize)
		  this.maximize();
		if (this.doMinimize)
		  this.minimize();
  },
 
  _createHiddenDiv: function(className) {
    var objBody = document.getElementsByTagName("body").item(0);
    var win = document.createElement("div");
		win.setAttribute('id', this.element.id+ "_tmp");
		win.className = className;
		win.style.display = 'none'
		win.innerHTML = ''
		objBody.insertBefore(win, objBody.firstChild)   
		return win
  },
  
	_storeLocation: function() {
	  if (this.storedLocation == null) {
	    this.storedLocation = {useTop: this.useTop, useLeft: this.useLeft, 
	                           top: this.element.getStyle('top'), bottom: this.element.getStyle('bottom'),
	                           left: this.element.getStyle('left'), right: this.element.getStyle('right'),
	                           width: this.width, height: this.height };
	  }
	},
	
  _restoreLocation: function() {
    if (this.storedLocation != null) {
      this.useLeft = this.storedLocation.useLeft;
      this.useTop = this.storedLocation.useTop;
      
      this.element.setStyle(this.useLeft ? {left: this.storedLocation.left} : {right: this.storedLocation.right});
  		this.element.setStyle(this.useTop ? {top: this.storedLocation.top} : {bottom: this.storedLocation.bottom});
		  this.setSize(this.storedLocation.width, this.storedLocation.height);
      
		  Windows.resetOverflow();
		  this._removeStoreLocation();
    }
  },
  
  _removeStoreLocation: function() {
    this.storedLocation = null;
  }
};

// Windows containers, register all page windows
var Windows = {
  windows: [],
  observers: [],
  focusedWindow: null,
  maxZIndex: 0,

  addObserver: function(observer) {
    this.removeObserver(observer);
    this.observers.push(observer);
  },
  
  removeObserver: function(observer) {  
    this.observers = this.observers.reject( function(o) { return o==observer });
  },
  
  notify: function(eventName, win) {  //  onStartResize(), onEndResize(), onStartMove(), onEndMove(), onClose(), onDestroy(), onMinimize(), onMaximize()
    this.observers.each( function(o) {if(o[eventName]) o[eventName](eventName, win);});
  },

  // Gets window from its id
  getWindow: function(id) {
	  return this.windows.detect(function(d) { return d.getId() ==id });
  },

  // Gets the last focused window
  getFocusedWindow: function() {
	  return this.focusedWindow;
  },

  // Registers a new window (called by Windows constructor)
  register: function(win) {
    this.windows.push(win);
  },
  
  // Unregisters a window (called by Windows destructor)
  unregister: function(win) {
    this.windows = this.windows.reject(function(d) { return d==win });
  }, 

  // Closes a window with its id
  close: function(id) {
  	var win = this.getWindow(id);
  	// Asks delegate if exists
    if (win) {
	  	if (win.getDelegate() && ! win.getDelegate().canClose(win)) 
	  		return;
	
  			this.notify("onClose", win);
  			win.hide();
  	}
  },
  
  // Closes all windows
  closeAll: function() {  
    this.windows.each( function(w) {Windows.close(w.getId())} );
  },
  
  // Minimizes a window with its id
  minimize: function(id) {
  	var win = this.getWindow(id)
  	if (win)
  	  win.minimize();
  },
  
  // Maximizes a window with its id
  maximize: function(id) {
  	var win = this.getWindow(id)
  	if (win)
  	  win.maximize();
  },
  
  unsetOverflow: function(except) {		
  	this.windows.each(function(d) { d.oldOverflow = d.getContent().getStyle("overflow") || "auto" ; d.getContent().setStyle({overflow: "hidden"}) });
  	if (except && except.oldOverflow)
  		except.getContent().setStyle({overflow: except.oldOverflow});
  },

  resetOverflow: function() {
	  this.windows.each(function(d) { if (d.oldOverflow) d.getContent().setStyle({overflow: d.oldOverflow}) });
  },

  updateZindex: function(zindex, win) {
  	if (zindex > this.maxZIndex)
  		this.maxZIndex = zindex;
    this.focusedWindow = win;
  }
};

var Dialog = {
  dialogId: null,
 	win: null,
  onCompleteFunc: null,
  callFunc: null, 
  parameters: null, 
    
	confirm: function(content, parameters) {
	  // Get Ajax return before
	  if (typeof content != "string") {
	    Dialog._runAjaxRequest(content, parameters, Dialog.confirm);
	    return 
	  }
	  
	  parameters = parameters || {};
		var okLabel = parameters.okLabel ? parameters.okLabel : "Ok";
		var cancelLabel = parameters.cancelLabel ? parameters.cancelLabel : "Cancel";

		var windowParam = parameters.windowParameters || {};
		windowParam.className = windowParam.className || "alert";

    okButtonClass = "class ='" + (parameters.buttonClass ? parameters.buttonClass + " " : "") + " ok_button'" 
    cancelButtonClass = "class ='" + (parameters.buttonClass ? parameters.buttonClass + " " : "") + " cancel_button'" 
		var content = "\
			<div class='" + windowParam.className + "_message'>" + content  + "</div>\
				<div class='" + windowParam.className + "_buttons'>\
					<input type='button' value='" + okLabel + "' onclick='Dialog.okCallback()'" + okButtonClass + "/>\
					<input type='button' value='" + cancelLabel + "' onclick='Dialog.cancelCallback()' " + cancelButtonClass + "/>\
				</div>\
		";
	  this._openDialog(content, parameters)
	  return this.win
	},
	
	alert: function(content, parameters) {
	  // Get Ajax return before
	  if (typeof content != "string") {
	    Dialog._runAjaxRequest(content, parameters, Dialog.alert);
	    return 
	  }
	  
	  parameters = parameters || {};
		var okLabel = parameters.okLabel ? parameters.okLabel : "Ok";

		var windowParam = parameters.windowParameters || {};
		windowParam.className = windowParam.className || "alert";

    okButtonClass = "class ='" + (parameters.buttonClass ? parameters.buttonClass + " " : "") + " ok_button'" 
		var content = "\
			<div class='" + windowParam.className + "_message'>" + content  + "</div>\
				<div class='" + windowParam.className + "_buttons'>\
					<input type='button' value='" + okLabel + "' onclick='Dialog.okCallback()'" + okButtonClass + "/>\
				</div>";
		return this._openDialog(content, parameters)
	},
	
	info: function(content, parameters) {   
	  // Get Ajax return before
	  if (typeof content != "string") {
	    Dialog._runAjaxRequest(content, parameters, Dialog.info);
	    return 
	  }
	   
	  parameters = parameters || {};
	  parameters.windowParameters = parameters.windowParameters || {};
	  
		var className = parameters.windowParameters.className || "alert";

		var content = "<div id='modal_dialog_message' class='" + className + "_message'>" + content  + "</div>";
		if (parameters.showProgress)
		  content += "<div id='modal_dialog_progress' class='" + className + "_progress'>	</div>";

		parameters.windowParameters.ok = null;
		parameters.windowParameters.cancel = null;
    parameters.windowParameters.className = className;
		
		return this._openDialog(content, parameters)
	},
	
	setInfoMessage: function(message) {
		$('modal_dialog_message').update(message);
	},
	
	closeInfo: function() {
		Windows.close(this.dialogId);
	},
	
	_openDialog: function(content, parameters) {
		// remove old dialog
		if (this.win) 
			this.win.destroy();

    if (! parameters.windowParameters.height && ! parameters.windowParameters.width) {
      parameters.windowParameters.width = WindowUtilities.getPageSize().pageWidth / 2;
    }
    this.dialogId = parameters.id ? parameters.id : 'modal_dialog'

    // compute height or width if need be
    if (! parameters.windowParameters.height || ! parameters.windowParameters.width) {
  		var objBody = document.getElementsByTagName("body").item(0);
  		var tmpObj = document.createElement("div");
  		tmpObj.setAttribute('id', this.dialogId);
			
  		if (parameters.windowParameters.height)
  		  tmpObj.style.height = parameters.windowParameters.height + "px"
		  else
		    tmpObj.style.width = parameters.windowParameters.width + "px"
		  
  		tmpObj.style.position = 'absolute';
  		tmpObj.style.top = '0';
  		tmpObj.style.left = '0';
 		  tmpObj.style.display = 'none';
		
      tmpObj.innerHTML = content
  		objBody.insertBefore(tmpObj, objBody.firstChild);
  		if (parameters.windowParameters.height)
  		  parameters.windowParameters.width = $(this.dialogId).getDimensions().width + 5
		  else
		    parameters.windowParameters.height = $(this.dialogId).getDimensions().height + 5
  		objBody.removeChild(tmpObj)
    }
		var windowParam = parameters && parameters.windowParameters ? parameters.windowParameters : {};
		windowParam.resizable = windowParam.resizable || false;
		
		windowParam.effectOptions = windowParam.effectOptions || {duration: 1};
    windowParam.minimizable = false;
    windowParam.maximizable = false;
    windowParam.closable = false;
		this.win = new Window(this.dialogId, windowParam);
		this.win.getContent().innerHTML = content;
  	this.win.showCenter(true);	
		  
		this.win.cancelCallback = parameters.cancel;
		this.win.okCallback = parameters.ok;
		
		if (! this.eventResize)
		  this.eventResize = this.recenter.bindAsEventListener(this);
		  
  	Event.observe(window, "resize", this.eventResize);
  	Event.observe(window, "scroll", this.eventResize);

		return this.win;		
	},
	
	_getAjaxContent: function(originalRequest)  {
      Dialog.callFunc(originalRequest.responseText, Dialog.parameters)
  },
  
  _runAjaxRequest: function(message, parameters, callFunc) {
    if (message.options == null)
	    message.options ={}  
	  Dialog.onCompleteFunc = message.options.onComplete;
    Dialog.parameters = parameters;
    Dialog.callFunc = callFunc;
    
	  message.options.onComplete = Dialog._getAjaxContent;
    new Ajax.Request(message.url, message.options);
  },
  
	okCallback: function() {
		Event.stopObserving(window, "resize", this.eventResize);
		Event.stopObserving(window, "scroll", this.eventResize);
      	
		if (!this.win.okCallback || this.win.okCallback(this.win))
	    this.win.hide();
	},

	cancelCallback: function() {
		this.win.hide();
		Event.stopObserving(window, "resize", this.eventResize);
		Event.stopObserving(window, "scroll", this.eventResize);
		
		if (this.win.cancelCallback)
			this.win.cancelCallback(this.win);
	},

	recenter: function(event) {
		var pageSize = WindowUtilities.getPageSize();
		// set height of Overlay to take up whole page and show
		if ($('overlay_modal')) {
		  $('overlay_modal').style.height = (pageSize.pageHeight + 'px');
		  $('overlay_modal').style.width = (pageSize.pageWidth + 'px');
    }		
		this.win._center();
	}
}

//Based on Lightbox JS: Fullsize Image Overlays by Lokesh Dhakar - http://www.huddletogether.com For more information on this script, visit: http://huddletogether.com/projects/lightbox/ Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/ (basically, do anything you want, just leave my name and link)

var isIE = navigator.appVersion.match(/MSIE/) == "MSIE";

var WindowUtilities = {
  // From script.aculo.us
  getWindowScroll: function() {
    var w = window;
      var T, L, W, H;
      with (w.document) {
        if (w.document.documentElement && documentElement.scrollTop) {
          T = documentElement.scrollTop;
          L = documentElement.scrollLeft;
        } else if (w.document.body) {
          T = body.scrollTop;
          L = body.scrollLeft;
        }
        if (w.innerWidth) {
          W = w.innerWidth;
          H = w.innerHeight;
        } else if (w.document.documentElement && documentElement.clientWidth) {
          W = documentElement.clientWidth;
          H = documentElement.clientHeight;
        } else {
          W = body.offsetWidth;
          H = body.offsetHeight
        }
      }
      return { top: T, left: L, width: W, height: H };
    
  }, 
  getPageSize: function(){
  	var xScroll, yScroll;

  	if (window.innerHeight && window.scrollMaxY) {	
  		xScroll = document.body.scrollWidth;
  		yScroll = window.innerHeight + window.scrollMaxY;
  	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
  		xScroll = document.body.scrollWidth;
  		yScroll = document.body.scrollHeight;
  	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
  		xScroll = document.body.offsetWidth;
  		yScroll = document.body.offsetHeight;
  	}

  	var windowWidth, windowHeight;

  	if (self.innerHeight) {	// all except Explorer
  		windowWidth = self.innerWidth;
  		windowHeight = self.innerHeight;
  	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
  		windowWidth = document.documentElement.clientWidth;
  		windowHeight = document.documentElement.clientHeight;
  	} else if (document.body) { // other Explorers
  		windowWidth = document.body.clientWidth;
  		windowHeight = document.body.clientHeight;
  	}	
  	var pageHeight, pageWidth;

  	// for small pages with total height less then height of the viewport
  	if(yScroll < windowHeight){
  		pageHeight = windowHeight;
  	} else { 
  		pageHeight = yScroll;
  	}

  	// for small pages with total width less then width of the viewport
  	if(xScroll < windowWidth){	
  		pageWidth = windowWidth;
  	} else {
  		pageWidth = xScroll;
  	}

  	return {pageWidth: pageWidth ,pageHeight: pageHeight , windowWidth: windowWidth, windowHeight: windowHeight};
  },

 	disableScreen: function(className, id, hideSelect) {
 	  id = id || 'overlay_modal'
 	  hideSelect = hideSelect || true
		WindowUtilities.initLightbox(id, className);
		var objBody = document.getElementsByTagName("body").item(0);

		// prep objects
	 	var objOverlay = $(id);

		var pageSize = WindowUtilities.getPageSize();

		// Hide select boxes as they will 'peek' through the image in IE
		if (hideSelect && isIE) {
      $$('select').each(function(element) {element.style.visibility = "hidden"});
	    $$('#'+id+' select').each(function(element) {element.style.visibility = "visible"});
		}	
	
		// set height of Overlay to take up whole page and show
		objOverlay.style.height = (pageSize.pageHeight + 'px');
		objOverlay.style.width = (pageSize.windowWidth + 'px');
		objOverlay.style.display = 'block';	
	},

 	enableScreen: function(id) {
 	  id = id || 'overlay_modal'
	 	var objOverlay =  $(id);
		if (objOverlay) {
			// hide lightbox and overlay
			objOverlay.style.display = 'none';

			// make select boxes visible
			if (isIE) {
        $$('select').each(function(element) {element.style.visibility = "visible"});
			}
			objOverlay.parentNode.removeChild(objOverlay);
		}
	},
	initLightbox: function(id, className) {
		// Already done, just update zIndex
		if ($(id)) {
			Element.setStyle(id, {zIndex: Windows.maxZIndex + 10});
		}
		// create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
		else {
			var objBody = document.getElementsByTagName("body").item(0);
			var objOverlay = document.createElement("div");
			objOverlay.setAttribute('id', id);
			objOverlay.className = "overlay_" + className
			objOverlay.style.display = 'none';
			objOverlay.style.position = 'absolute';
			objOverlay.style.top = '0';
			objOverlay.style.left = '0';
			objOverlay.style.zIndex = Windows.maxZIndex + 10;
		 	objOverlay.style.width = '100%';
			objBody.insertBefore(objOverlay, objBody.firstChild);
		}
	}
}

//--><!]]>