/*  Prototype JavaScript framework
 *  (c) 2005 Sam Stephenson <sam@conio.net>
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://prototype.conio.net/
/*--------------------------------------------------------------------------*/

//note: modified & stripped down version of prototype, to be used with moo.fx by mad4milk (http://moofx.mad4milk.net).

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

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

Function.prototype.bind = function(object) {
  var __method = this;
  return function() {
    return __method.apply(object, arguments);
  }
}

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

function $() {
  if (arguments.length == 1) return get$(arguments[0]);
  var elements = [];
  $c(arguments).each(function(el){
    elements.push(get$(el));
  });
  return elements;

  function get$(el){
    if (typeof el == 'string') el = document.getElementById(el);
    return el;
  }
}

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

Object.extend(Element, {
  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
  },

  hasClassName: function(element, className) {
    element = $(element);
    if (!element) return;
    var hasClass = false;
    element.className.split(' ').each(function(cn){
      if (cn == className) hasClass = true;
    });
    return hasClass;
  },

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

  removeClassName: function(element, className) {
    element = $(element);
    if (!element) return;
    var newClassName = '';
    element.className.split(' ').each(function(cn, i){
      if (cn != className){
        if (i > 0) newClassName += ' ';
        newClassName += cn;
      }
    });
    element.className = newClassName;
  },

  cleanWhitespace: function(element) {
    element = $(element);
    $c(element.childNodes).each(function(node){
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) Element.remove(node);
    });
  },

  find: function(element, what) {
    element = $(element)[what];
    while (element.nodeType != 1) element = element[what];
    return element;
  }
});

var Position = {
  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];
  }
};

document.getElementsByClassName = function(className) {
  var children = document.getElementsByTagName('*') || document.all;
  var elements = [];
  $c(children).each(function(child){
    if (Element.hasClassName(child, className)) elements.push(child);
  });
  return elements;
}

//useful array functions
Array.prototype.each = function(func){
  for(var i=0;ob=this[i];i++) func(ob, i);
}

function $c(array){
  var nArray = [];
  for (i=0;el=array[i];i++) nArray.push(el);
  return nArray;
}

ajax = Class.create();
ajax.prototype = {
  initialize: function(url, options){
    this.transport = this.getTransport();
    this.postBody = options.postBody || '';
    this.method = options.method || 'post';
    this.onComplete = options.onComplete || null;
    this.update = $(options.update) || null;
    this.request(url);
  },

  request: function(url){
    this.transport.open(this.method, url, true);
    this.transport.onreadystatechange = this.onStateChange.bind(this);
    if (this.method == 'post') {
      this.transport.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
      if (this.transport.overrideMimeType) this.transport.setRequestHeader('Connection', 'close');
    }
    this.transport.send(this.postBody);
  },

  onStateChange: function(){
    if (this.transport.readyState == 4 && this.transport.status == 200) {
      if (this.onComplete)
        setTimeout(function(){this.onComplete(this.transport);}.bind(this), 10);
      if (this.update)
        setTimeout(function(){this.update.innerHTML = this.transport.responseText;}.bind(this), 10);
      this.transport.onreadystatechange = function(){};
    }
  },

  getTransport: function() {
    if (window.ActiveXObject) return new ActiveXObject('Microsoft.XMLHTTP');
    else if (window.XMLHttpRequest) return new XMLHttpRequest();
    else return false;
  }
};