/*  Prototype JavaScript framework, version 1.3.0
 *  (c) 2005 Sam Stephenson <sam@conio.net>
 *
 *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
 *  against the source tree, available from the Prototype darcs repository. 
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *
 *  For details, see the Prototype web site: http://prototype.conio.net/
 *
/*--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.3.0',
  emptyFunction: function() {}
}

var Class = {
  create: function() {
    return function() { 
      this.initialize.apply(this, arguments);
    }
  }
}

var Abstract = new Object();

Object.extend = function(destination, source) {
  for (property in source) {
    destination[property] = source[property];
  }
  return destination;
}
/*
Object.prototype.extend = function(object) {
  return Object.extend.apply(this, [this, object]);
}
*/
Function.prototype.bind = function(object) {
  var __method = this;
  return function() {
    __method.apply(object, arguments);
  }
}

Function.prototype.bindAsEventListener = function(object) {
  var __method = this;
  return function(event) {
    __method.call(object, event || window.event);
  }
}

Number.prototype.toColorPart = function() {
  var digits = this.toString(16);
  if (this < 16) return '0' + digits;
  return digits;
}

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;
      }
    }
  }
}

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

function $() {
  var elements = new Array();

  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

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

    elements.push(element);
  }

  return elements;
}

if (!Array.prototype.push) {
  Array.prototype.push = function() {
		var startLength = this.length;
		for (var i = 0; i < arguments.length; i++)
      this[startLength + i] = arguments[i];
	  return this.length;
  }
}

if (!Function.prototype.apply) {
  // Based on code from http://www.youngpup.net/
  Function.prototype.apply = function(object, parameters) {
    var parameterStrings = new Array();
    if (!object)     object = window;
    if (!parameters) parameters = new Array();
    
    for (var i = 0; i < parameters.length; i++)
      parameterStrings[i] = 'parameters[' + i + ']';
    
    object.__apply__ = this;
    var result = eval('object.__apply__(' + 
      parameterStrings[i].join(', ') + ')');
    object.__apply__ = null;
    
    return result;
  }
}

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

  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].nodeValue;
  }
});

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

Ajax.Base = function() {};
Ajax.Base.prototype = {
  setOptions: function(options) {
    this.options = Object.extend({
      method:       'post',
      asynchronous: true,
      parameters:   ''
    }, 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 {
      if (this.options.method == 'get')
        url += '?' + parameters;

      this.transport.open(this.options.method, 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) {
    }
  },

  setRequestHeaders: function() {
    var requestHeaders = 
      ['X-Requested-With', 'XMLHttpRequest',
       'X-Prototype-Version', Prototype.Version];

    if (this.options.method == 'post') {
      requestHeaders.push('Content-type', 
        'application/x-www-form-urlencoded');

      /* 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);
  },

  respondToReadyState: function(readyState) {
    var event = Ajax.Request.Events[readyState];

    if (event == 'Complete')
      (this.options['on' + this.transport.status]
       || this.options['on' + this.responseIsSuccess ? 'Success' : 'Failure']
       || Prototype.emptyFunction)(this.transport);       

    (this.options['on' + event] || Prototype.emptyFunction)(this.transport);    
  }
});

Ajax.Updater = Class.create();
Ajax.Updater.ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:<\/script>)';

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() {
      this.updateContent();
      onComplete(this.transport);      
    }).bind(this);

    this.request(url);
  },

  updateContent: function() {
    var receiver = this.responseIsSuccess() ?
      this.containers.success : this.containers.failure;

    var match    = new RegExp(Ajax.Updater.ScriptFragment, 'img');
    var response = this.transport.responseText.replace(match, '');
    var scripts  = this.transport.responseText.match(match);

    if (receiver) {
      if (this.options.insertion) {
        new this.options.insertion(receiver, response);
      } else {
//        receiver.innerHTML = response;
      }
    }

    if (this.responseIsSuccess()) {
      if (this.onComplete)
        setTimeout((function() {this.onComplete(
          this.transport)}).bind(this), 10);
    }

    if (this.options.evalScripts && scripts) {
      match = new RegExp(Ajax.Updater.ScriptFragment, 'im');
      setTimeout((function() {
        for (var i = 0; i < scripts.length; i++)
          eval(scripts[i].match(match)[1]);
      }).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 = 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 || Ajax.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);
  }
});

document.getElementsByClassName = function(className) {
  var children = document.getElementsByTagName('*') || document.all;
  var elements = new Array();
  
  for (var i = 0; i < children.length; i++) {
    var child = children[i];
    var classNames = child.className.split(' ');
    for (var j = 0; j < classNames.length; j++) {
      if (classNames[j] == className) {
        elements.push(child);
        break;
      }
    }
  }
  
  return elements;
}

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

if (!window.Element) {
  var Element = new Object();
}

Object.extend(Element, {
  toggle: function() {
    for (var i = 0; i < arguments.length; i++) {
      var element = $(arguments[i]);
      element.style.display = 
        (element.style.display == 'none' ? '' : 'none');
    }
  },

  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);
  },
   
  getHeight: function(element) {
    element = $(element);
    return element.offsetHeight; 
  },

  hasClassName: function(element, className) {
    element = $(element);
    if (!element)
      return;
    var a = element.className.split(' ');
    for (var i = 0; i < a.length; i++) {
      if (a[i] == className)
        return true;
    }
    return false;
  },

  addClassName: function(element, className) {
    element = $(element);
    Element.removeClassName(element, className);
    element.className += ' ' + className;
  },

  removeClassName: function(element, className) {
    element = $(element);
    if (!element)
      return;
    var newClassName = '';
    var a = element.className.split(' ');
    for (var i = 0; i < a.length; i++) {
      if (a[i] != className) {
        if (i > 0)
          newClassName += ' ';
        newClassName += a[i];
      }
    }
    element.className = newClassName;
  },
  
  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    var 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);
    }
  }
});

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;
    
    if (this.adjacency && this.element.insertAdjacentHTML) {
      this.element.insertAdjacentHTML(this.adjacency, this.content);
    } else {
      this.range = this.element.ownerDocument.createRange();
      if (this.initializeRange) this.initializeRange();
      this.fragment = this.range.createContextualFragment(this.content);
      this.insertContent();
    }
  }
}

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() {
    this.element.parentNode.insertBefore(this.fragment, this.element);
  }
});

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() {  
    this.element.insertBefore(this.fragment, this.element.firstChild);
  }
});

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() {
    this.element.appendChild(this.fragment);
  }
});

Insertion.After = Class.create();
Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
  initializeRange: function() {
    this.range.setStartAfter(this.element);
  },
  
  insertContent: function() {
    this.element.parentNode.insertBefore(this.fragment, 
      this.element.nextSibling);
  }
});

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).focus();
    $(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) {
    var form = $(form);
    var elements = new Array();

    for (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) {
    var 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 = '';
    }
  },

  focusFirstElement: function(form) {
    var form = $(form);
    var elements = Form.getElements(form);
    for (var i = 0; i < elements.length; i++) {
      var element = elements[i];
      if (element.type != 'hidden' && !element.disabled) {
        Field.activate(element);
        break;
      }
    }
  },

  reset: function(form) {
    $(form).reset();
  }
}

Form.Element = {
  serialize: function(element) {
    var element = $(element);
    var method = element.tagName.toLowerCase();
    var parameter = Form.Element.Serializers[method](element);
    
    if (parameter)
      return encodeURIComponent(parameter[0]) + '=' + 
        encodeURIComponent(parameter[1]);                   
  },
  
  getValue: function(element) {
    var 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) {
    var value = '';
    if (element.type == 'select-one') {
      var index = element.selectedIndex;
      if (index >= 0)
        value = element.options[index].value || element.options[index].text;
    } else {
      value = new Array();
      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':
          element.target = this;
          element.prev_onclick = element.onclick || Prototype.emptyFunction;
          element.onclick = function() {
            this.prev_onclick(); 
            this.target.onElementEvent();
          }
          break;
        case 'password':
        case 'text':
        case 'textarea':
        case 'select-one':
        case 'select-multiple':
          element.target = this;
          element.prev_onchange = element.onchange || Prototype.emptyFunction;
          element.onchange = function() {
            this.prev_onchange(); 
            this.target.onElementEvent();
          }
          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;
    }
  },

  // 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(Event.observers[i][0],Event.observers[i][1],Event.observers[i][2],Event.observers[i][3]);
      Event.observers[i][0] = null;
    }
    Event.observers = false;
  },

  observe: function(element, name, observer, useCapture) {
    var element = $(element);
    useCapture = useCapture || false;
    
    if (name == 'keypress') {
      if (navigator.appVersion.indexOf('AppleWebKit') > 0) {
        this._observeAndCache(element, 'keydown', observer, useCapture);
        return;
      }
      this._observeAndCache(element, 'keypress', observer, useCapture);
    } else {
      this._observeAndCache(element, name, observer, useCapture);
    }
  },

  stopObserving: function(element, name, observer, useCapture) {
    var element = $(element);
    useCapture = useCapture || false;
    
    if (name == 'keypress') {
      if (navigator.appVersion.indexOf('AppleWebKit') > 0) {
        element.removeEventListener('keydown', observer, useCapture);
        return;
      }
      if (element.removeEventListener) {
        element.removeEventListener('keypress', observer, useCapture);
      } else if (element.detachEvent) {
        element.detachEvent('onkeydown', observer);
      }
    } else {
      if (element.removeEventListener) {
        element.removeEventListener(name, observer, useCapture);
      } else if (element.detachEvent) {
        element.detachEvent('on' + name, observer);
      }
    }
  }
});

// prevent memory leaks
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];
  },

  // 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';
  }
}




function startStrip() {
	var out;
	out = '<div id="sub">';
	out += 		'<ul id="sub-lifestyle" style="display: ';
	if (sticky == "lifestyle") {
		out += 		'block';
	} else {
		out += 		'none';
	}
	out += 			';" onMouseOver="sub(\'sub-lifestyle\');" onMouseOut="hide(\'sub-lifestyle\');">';
	out += 			'<li><a href="lifestyle-park.html">The Park</a></li">';
	out += 			'<li><a href="lifestyle-pool.html">The Pool</a></li">';
	out += 			'<li><a href="lifestyle-tot-lot.html">The Tot-Lot</a></li">';
	out += 			'<li><a href="lifestyle-water-park.html">The Water Park</a></li>';
	out += 		'</ul>';
	out += 		'<ul id="sub-homes" style="display: ';
	if (sticky == "homes") {
		out += 		'block';
	} else {
		out += 		'none';
	}
	out += 			';" onMouseOver="sub(\'sub-homes\');" onMouseOut="hide(\'sub-homes\');">';
	out += 			'<li><a href="homes-design-center.html">Design Center</a></li">';
	out += 			'<li><a href="homes-authentic-architecture.html">Authentic Architecture</a></li">';
	out += 			'<li><a href="homes-landscape-design.html">Landscape Design</a></li">';
	out += 			'<li><a href="homes-green-building.html">Green Building</a></li">';
	out += 			'<li><a href="homes-solar-community.html">A Solar Community</a></li">';
	out += 			'<li><a href="homes-pre-qualify-online.html">Pre-Qualify Online</a></li>';
	out += 		'</ul>';
	out += 		'<ul id="sub-design" style="display: ';
	if (sticky == "design") {
		out += 		'block';
	} else {
		out += 		'none';
	}
	out += 			';" onMouseOver="sub(\'sub-design\');" onMouseOut="hide(\'sub-design\');">';
	out += 			'<li><a href="design-big-picture.html">The Big Picture</a></li">';
	out += 			'<li><a href="design-details.html">The Details</a></li">';
	out += 			'<li><a href="design-community.html">The Community</a></li">';
	out += 			'<li><a href="design-about-bakersfield.html">About Bakersfield</a></li">';
	out += 			'<li><a href="design-site-plan.html">Site Plan</a></li>';
	out += 		'</ul>';
	out += 		'<ul id="sub-about" style="display: ';
	if (sticky == "about") {
		out += 		'block';
	} else {
		out += 		'none';
	}
	out += 			';" onMouseOver="sub(\'sub-about\');" onMouseOut="hide(\'sub-about\');">';
	out += 			'<li><a href="about-contact-us.html">Contact Us</a></li">';
	out += 			'<li><a href="about-directions.html">Directions</a></li">';
	out += 			'<li><a href="about-news.html">News</a></li">';
	out += 			'<li><a href="about-resources.html">Resources</a></li">';
	out += 			'<li><a href="about-jobs.html">Jobs</a></li>';
	out += 		'</ul>';
	out += 	'</div>';
	document.getElementById('sub-bucket').innerHTML = out;

	out = '<ul id="strip">';
	out +=		'<li><img src="img1/3girls_pool.jpg" width="141" height="124" border="0" id="img1" /></li>';
	out += 		'<li><img src="inc/light-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="inc/dark-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="img2/cooking.jpg" width="187" height="124" border="0" id="img2" /></li>';
	out +=		'<li><img src="inc/light-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="img3/chess.jpg" width="102" height="124" border="0" id="img3" /></li>';
	out +=		'<li><img src="inc/light-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="inc/dark-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="img4/gazeebo.jpg" width="155" height="124" border="0" id="img4" /></li>';
	out +=		'<li><img src="inc/light-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="img5/guitar_kid.jpg" width="135" height="124" border="0" id="img5" /></li>';
	out +=	'</ul>';
	document.getElementById('strip-bucket').innerHTML = out;

	loadXMLDoc("inc/imgarray.php?folders[]=img1&folders[]=img2&folders[]=img3&folders[]=img4&folders[]=img5");

}

// Start AJAX Code

// global flag
var isIE = false;

var isLoaded = false;

// global request and XML document objects
var req;

// retrieve XML document (reusable generic function);
// parameter is URL string (relative or complete) to
// an .xml file whose Content-Type is a valid XML
// type, such as text/xml; XML source must be from
// same domain as HTML file
function loadXMLDoc(url) {
//	alert("loadXMLDoc called");
	isLoaded = false;
	random_num = (Math.round((Math.random()*99999999)+1));
	url = url + "&" + random_num;
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processReqChange;
        req.open("GET", url, true);
        req.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        isIE = true;
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = processReqChange;
            req.open("GET", url, true);
            req.send();
        }
    }
}

// handle onreadystatechange event of req object
function processReqChange() {
//	alert("processReqChange called");
    // only if req shows "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200 && isLoaded == false) {
//			alert("processReqChange called 200");
            buildTopicList();
         } else {
//			setTimeout("loadXMLDoc('systemStatusXML.php');",2000);
//            alert("There was a problem retrieving the XML data:\n" +
//                req.statusText);
         }
    }
}

// retrieve text of an XML document element, including
// elements using namespaces
function getElementTextNS(prefix, local, parentElem, index) {
    var result = "";
    if (prefix && isIE) {
        // IE/Windows way of handling namespaces
        result = parentElem.getElementsByTagName(prefix + ":" + local)[index];
    } else {
        // the namespace versions of this method 
        // (getElementsByTagNameNS()) operate
        // differently in Safari and Mozilla, but both
        // return value with just local name, provided 
        // there aren't conflicts with non-namespace element
        // names
        result = parentElem.getElementsByTagName(local)[index];
    }
    if (result) {
        // get text, accounting for possible
        // whitespace (carriage return) text nodes 
        if (result.childNodes.length > 1) {
            return result.childNodes[1].nodeValue;
        } else {
            return result.firstChild.nodeValue;    		
        }
    } else {
        return "n/a";
    }
}

var photos = new Array(5);

// fill Topics select list with items from
// the current XML document
function buildTopicList() {
    var items = req.responseXML.getElementsByTagName("folder");
    // loop through <item> elements, and add each nested
    // <title> element to Topics select element
//	alert(items.length);
	var i;
	var subitems;
    for (i = 0; i < items.length; i++) {
//		alert("aa");
		var subitems = items[i].getElementsByTagName("image");
		var temp = new Array(5);
		for (k = 0; k < subitems.length; k++) {
//			alert(getElementTextNS("", "name", items[i], 0) +" - "+ getElementTextNS("", "image", items[i], k));
			temp[k] = getElementTextNS("", "image", items[i], k);
		}
		photos[getElementTextNS("", "name", items[i], 0)] = temp;
    }
	isLoaded = true;

	var h = i;

	loads = new Array();
	var g = 0;
	for (i in photos) {
		for (k in photos[i]) {
			loads[g] = new Image();
			loads[g].src = i +"/"+ photos[i][k];
			photos[i][k] = i +"/"+ photos[i][k];
			g++;
		}
	}

	if (h > 3) {
		window.setTimeout('change(\'img3\',0);',3000);
		window.setTimeout('change(\'img1\',0);',6000);
		window.setTimeout('change(\'img5\',0);',9000);
		window.setTimeout('change(\'img2\',0);',12000);
		window.setTimeout('change(\'img4\',0);',15000);
	} else {
		window.setTimeout('change(\'img3\',0);',3000);
		window.setTimeout('change(\'img1\',0);',8000);
		window.setTimeout('change(\'img2\',0);',12000);
	}

}

function startStrip2() {
	var out;
	out = '<div id="sub">';
	out += 		'<ul id="sub-lifestyle" style="display: ';
	if (sticky == "lifestyle") {
		out += 		'block';
	} else {
		out += 		'none';
	}
	out += 			';" onMouseOver="sub(\'sub-lifestyle\');" onMouseOut="hide(\'sub-lifestyle\');">';
	out += 			'<li><a href="lifestyle-park.html">The Park</a></li">';
	out += 			'<li><a href="lifestyle-pool.html">The Pool</a></li">';
	out += 			'<li><a href="lifestyle-tot-lot.html">The Tot-Lot</a></li">';
	out += 			'<li><a href="lifestyle-water-park.html">The Water Park</a></li>';
	out += 		'</ul>';
	out += 		'<ul id="sub-homes" style="display: ';
	if (sticky == "homes") {
		out += 		'block';
	} else {
		out += 		'none';
	}
	out += 			';" onMouseOver="sub(\'sub-homes\');" onMouseOut="hide(\'sub-homes\');">';
	out += 			'<li><a href="homes-design-center.html">Design Center</a></li">';
	out += 			'<li><a href="homes-authentic-architecture.html">Authentic Architecture</a></li">';
	out += 			'<li><a href="homes-landscape-design.html">Landscape Design</a></li">';
	out += 			'<li><a href="homes-green-building.html">Green Building</a></li">';
	out += 			'<li><a href="homes-solar-community.html">A Solar Community</a></li">';
	out += 			'<li><a href="homes-pre-qualify-online.html">Pre-Qualify Online</a></li>';
	out += 		'</ul>';
	out += 		'<ul id="sub-design" style="display: ';
	if (sticky == "design") {
		out += 		'block';
	} else {
		out += 		'none';
	}
	out += 			';" onMouseOver="sub(\'sub-design\');" onMouseOut="hide(\'sub-design\');">';
	out += 			'<li><a href="design-big-picture.html">The Big Picture</a></li">';
	out += 			'<li><a href="design-details.html">The Details</a></li">';
	out += 			'<li><a href="design-community.html">The Community</a></li">';
	out += 			'<li><a href="design-about-bakersfield.html">About Bakersfield</a></li">';
	out += 			'<li><a href="design-site-plan.html">Site Plan</a></li>';
	out += 		'</ul>';
	out += 		'<ul id="sub-about" style="display: ';
	if (sticky == "about") {
		out += 		'block';
	} else {
		out += 		'none';
	}
	out += 			';" onMouseOver="sub(\'sub-about\');" onMouseOut="hide(\'sub-about\');">';
	out += 			'<li><a href="about-contact-us.html">Contact Us</a></li">';
	out += 			'<li><a href="about-directions.html">Directions</a></li">';
	out += 			'<li><a href="about-news.html">News</a></li">';
	out += 			'<li><a href="about-resources.html">Resources</a></li">';
	out += 			'<li><a href="about-jobs.html">Jobs</a></li>';
	out += 		'</ul>';
	out += 	'</div>';
	document.getElementById('sub-bucket').innerHTML = out;

	out = '<ul id="strip" style="height: 124px; overflow: visible;">';
	out +=		'<li><img src="inc/img.php?folder=img1" width="141" height="124" border="0" id="img1" /></li>';
	out += 		'<li><img src="inc/light-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="inc/dark-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="inc/img.php?folder=img2" width="187" height="124" border="0" id="img2" /></li>';
	out +=		'<li><img src="inc/light-green.gif" width="10" height="124" border="0" /></li>';
	out +=		'<li><img src="inc/img.php?folder=img3" width="102" height="124" border="0" id="img3" /></li>';
	out +=		'<li><img src="inc/light-green.gif" width="10" height="124" border="0" /></li>';
	if (typeof(sideImage) == "string") {
		out += 		'<li><img src="inc/'+ sideImage +'" width="310" height="395" border="0" id="img6" /></li>';
	} else {
		out += 		'<li><img src="inc/side1.jpg" width="310" height="395" border="0" id="img6" /></li>';
	}
	out +=	'</ul>';
	document.getElementById('strip-bucket').innerHTML = out;
//	window.setTimeout('change(\'img3\');',3000);
//	window.setTimeout('change(\'img1\');',6000);
//	window.setTimeout('change(\'img2\');',12000);
	loadXMLDoc("inc/imgarray.php?folders[]=img1&folders[]=img2&folders[]=img3");
}



var to;
var sticky;
function clearAll(stick) {
	document.getElementById("sub-lifestyle").style.display = "none";
	document.getElementById("sub-homes").style.display = "none";
	document.getElementById("sub-design").style.display = "none";
	document.getElementById("sub-about").style.display = "none";

	document.getElementById("nav-home").src = "inc/nav-home.gif";
	document.getElementById("nav-lifestyle").src = "inc/nav-lifestyle.gif";
	document.getElementById("nav-homes").src = "inc/nav-homes.gif";
	document.getElementById("nav-design").src = "inc/nav-design.gif";
	document.getElementById("nav-about").src = "inc/nav-about.gif";

	if (sticky != "" && stick == true) {
		document.getElementById("sub-"+ sticky).style.display = "block";
		document.getElementById("nav-"+ sticky).src = "inc/nav-"+ sticky +"-on.gif";
	}
}
function show(id,id2) {
	if (to) {
		clearTimeout(to);
	}
	clearAll();
	if (document.getElementById(id)) {
		document.getElementById(id).style.display = "block";
	}
	document.getElementById(id2).src = "inc/"+ id2 +"-on.gif";
}
function hide(id) {
	clearTimeout(to);
	to = setTimeout("clearAll(true);",300);
}
function sub(id) {
	clearTimeout(to);
}
var preload = new Image();
function change(element,last) {
//	new Effect.Fade(id);
//	num = Math.floor(Math.random()*1001);
//	preload.src = "inc/img.php?folder="+ element +"&seed="+ num;
//	preload.onload = fadeImage(element,num);

	options = Object.extend({
	from: 1.0,
	to:   0.0,
	afterFinish: function(effect) 
	{
//		alert(photos[element][last + 1]);
		if (photos[element][last + 1]) {
			next = last + 1;
		} else {
			next = 0;
		}
		effect.element.src = photos[element][next];
		Effect.Appear(effect.element);
		window.setTimeout('change(\''+ element +'\','+ next +');',15000);
	} 
	}, arguments[1] || {});
	new Effect.Opacity(element,options);
	
}
function fadeImage(element,num) {
	options = Object.extend({
	from: 1.0,
	to:   0.0,
	afterFinish: function(effect) 
	{ effect.element.src = "inc/img.php?folder="+ element +"&seed="+ num; Effect.Appear(effect.element); window.setTimeout('change(\''+ element +'\');',15000);} 
	}, arguments[1] || {});
	new Effect.Opacity(element,options);
}




Effect = {}
Effect2 = Effect; // deprecated

/* ------------- transitions ------------- */

Effect.Transitions = {}

Effect.Transitions.linear = function(pos) {
  return pos;
}
Effect.Transitions.sinoidal = function(pos) {
  return (-Math.cos(pos*Math.PI)/2) + 0.5;
}
Effect.Transitions.reverse  = function(pos) {
  return 1-pos;
}
Effect.Transitions.flicker = function(pos) {
  return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random(0.25);
}
Effect.Transitions.wobble = function(pos) {
  return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
}
Effect.Transitions.pulse = function(pos) {
  return (Math.floor(pos*10) % 2 == 0 ? 
    (pos*10-Math.floor(pos*10)) : 1-(pos*10-Math.floor(pos*10)));
}
Effect.Transitions.none = function(pos) {
  return 0;
}
Effect.Transitions.full = function(pos) {
  return 1;
}

/* ------------- element ext -------------- */

Element.makePositioned = function(element) {
  element = $(element);
  if(element.style.position == "")
    element.style.position = "relative";
}

Element.makeClipping = function(element) {
  element = $(element);
  element._overflow = element.style.overflow || 'visible';
  if(element._overflow!='hidden') element.style.overflow = 'hidden';
}

Element.undoClipping = function(element) {
  element = $(element);
  if(element._overflow!='hidden') element.style.overflow = element._overflow;
}

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

Effect.Base = function() {};
Effect.Base.prototype = {
  setOptions: function(options) {
    this.options = Object.extend({
      transition: Effect.Transitions.sinoidal,
      duration:   1.0,   // seconds
      fps:        25.0,  // max. 100fps
      sync:       false, // true for combining
      from:       0.0,
      to:         1.0
    }, options || {});
  },
  start: function(options) {
    this.setOptions(options || {});
    this.currentFrame = 0;
    this.startOn      = new Date().getTime();
    this.finishOn     = this.startOn + (this.options.duration*1000);
    if(this.options.beforeStart) this.options.beforeStart(this);
    if(!this.options.sync) this.loop();  
  },
  loop: function() {
    var timePos = new Date().getTime();
    if(timePos >= this.finishOn) {
      this.render(this.options.to);
      if(this.finish) this.finish(); 
      if(this.options.afterFinish) this.options.afterFinish(this);
      return;  
    }
    var pos   = (timePos - this.startOn) / (this.finishOn - this.startOn);
    var frame = Math.round(pos * this.options.fps * this.options.duration);
    if(frame > this.currentFrame) {
      this.render(pos);
      this.currentFrame = frame;
    }
    this.timeout = setTimeout(this.loop.bind(this), 10);
  },
  render: function(pos) {
    if(this.options.transition) pos = this.options.transition(pos);
    pos *= (this.options.to-this.options.from);
    pos += this.options.from; 
    if(this.options.beforeUpdate) this.options.beforeUpdate(this);
    if(this.update) this.update(pos);
    if(this.options.afterUpdate) this.options.afterUpdate(this);  
  },
  cancel: function() {
    if(this.timeout) clearTimeout(this.timeout);
  }
}

Effect.Parallel = Class.create();
Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    for (var i = 0; i < this.effects.length; i++)
      this.effects[i].render(position);  
  },
  finish: function(position) {
    for (var i = 0; i < this.effects.length; i++)
      if(this.effects[i].finish) this.effects[i].finish(position);
  }
});

// Internet Explorer caveat: works only on elements the have
// a 'layout', meaning having a given width or height. 
// There is no way to safely set this automatically.
Effect.Opacity = Class.create();
Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
  initialize: function(element) {
    this.element = $(element);
    options = Object.extend({
      from: 0.0,
      to:   1.0
    }, arguments[1] || {});
    this.start(options);
  },
  update: function(position) {
    this.setOpacity(position);
  }, 
  setOpacity: function(opacity) {
    opacity = (opacity == 1) ? 0.99999 : opacity;
    this.element.style.opacity = opacity;
    this.element.style.filter = "alpha(opacity:"+opacity*100+")";
  }
});

/* ------------- prepackaged effects ------------- */

Effect.Fade = function(element) {
  options = Object.extend({
  from: 1.0,
  to:   0.0,
  afterFinish: function(effect) 
    { Effect.Appear(effect.element); } 
  }, arguments[1] || {});
  new Effect.Opacity(element,options);
}

Effect.Appear = function(element) {
  options = Object.extend({
  from: 0.0,
  to:   1.0,
  beforeStart: function(effect)  
    { effect.setOpacity(0);
      Element.show(effect.element); },
  afterUpdate: function(effect)  
    { Element.show(effect.element); }
  }, arguments[1] || {});
  new Effect.Opacity(element,options);
}