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

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 $() {

 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;

}

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, {

 remove: function ( element ) {

  element = $(element);
  element.parentNode.removeChild(element);

 },

 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;

 },

 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);
  }

 }
});