/*  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;
}

//moo.dom by Valerio Proietti (http://mad4milk.net) MIT Open Source license;
//v 1.5 (beta);

function $S() {
	var elements = [];
	$c(arguments).each(function(sel){
		if (typeof sel == 'string') {
			sel.getElements().each(function(el){
				elements.push(el);
			});
		}
		else elements.push(sel);
	});
	return elements;
}

/*------------------String Prototypes----------------------*/

Object.extend(String.prototype, {
	getElements: function(filter){
		var params = [];
		this.split(' ').each(function(arg, j){
			params[j] = param = [];
			if (arg.indexOf('#') > -1) {
				var bits = arg.split('#');
				param['tag'] = bits[0] || '*';
				param['id'] = bits[1];
			}
			else if (arg.indexOf('.') > -1) {
				var bits = arg.split('.');
				param['tag'] = bits[0] || '*';
				param['class'] = bits[1];
			}
			else param['tag'] = arg;
		});
		var filter = filter || document;
		filter = $c(filter.getElementsByTagName('*'));
		params.each(function(param, k){
			if (param['tag'] != '*' && k == 0) filter = filter.filterByTagName(param['tag']);
			else if (k != 0) filter = filter.getElementsByTagName(param['tag']);
			if (param['id']) filter = filter.filterById(param['id']);
			if (param['class']) filter = filter.filterByClassName(param['class']);
		});
		return filter;
	},
	
	getElementsBySelector: function(filter){
		if (!filter) filter = null;
		var elements = [];
		this.split(',').each(function(selector){
			elmnts = selector.replace(/^\s*|\s*$/g,"").getElements(filter);
			elmnts.each(function(el){
				elements.push(el);
			});
		});
		return elements;
	}
});


/*----------------------Array Prototypes-----------------------*/

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

Object.extend(Array.prototype, {
	iterate: function(func){
		for(var i=0;ob=this[i];i++) func(ob, i);
	},

	action: function(actions){
		this.each(function(el){
			if (actions.initialize) actions.initialize.apply(el);
			for(action in actions){
				if (action.slice(0,2) == 'on') el[action] = actions[action];
			}
		});
	},
	
	filterById: function(id){
		var found = [];
		this.each(function(el){
			if (el.id == id) found.push(el);
		});
		return found;
	},

	filterByClassName: function(className){
		var found = [];
		this.each(function(el){
			if (Element.hasClassName(el, className)) found.push(el);
		});
		return found;
	},

	filterByTagName: function(tagName){
		var found = [];
		this.each(function(el){
			if (el.tagName.toLowerCase() == tagName) found.push(el);
		});
		return found;
	},

	getElementsByTagName: function(tagName){
		var found = [];
		this.each(function(el){
			$c(el.getElementsByTagName(tagName)).each(function(tn){
				found.push(tn);
			});
		});
		return found;
	}
});

if(!Array.prototype.each) Array.prototype.each = Array.prototype.iterate;


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 */
Event.observe(window, 'unload', Event.unloadCache, false);

function indexFormElements()
{
  var f = document.forms;
  for (var i=0; i<f.length; i++) {
  	var e = f[i].elements;
  	for (var j=0; j<e.length; j++) {
	  e[j]["index"] = j;
	}
  }
}

// advances the cursor to the next field 
// rather than submitting the form
function enterKeyHandler(event) {
  if(event.keyCode == Event.KEY_RETURN) {
    var element = Event.element(event);
	var i = element.index;
	var nextElement;
	while (!nextElement) {
		i = (i+1) % element.form.length;
		var e = element.form.elements[i];
		if(!/hidden/.test(e.type)) {
			nextElement = e;
		} else if (i == element.index) {
			nextElement = element;
		}
	}
	
    if ( !(/hidden|textarea|submit|button/.test(element.type) 
		    || 
		  nextElement.type == "submit") ) 
	{
      Event.stop(event);
      nextElement.focus();
	  return false;
    }
  }
  return true;
}

function toggleDisplay() {
	for (var i=0; i< arguments.length; i++) 
	{
	  try { 
		var e = $(arguments[i]);
 		e.style.display = (e.style.display == 'none') ? 'block' : 'none';
	  } catch(ex) {
		return;
	  }
	}
}