/**
 * Prototype Improvements v0.1
 *
 * Various additions to the prototype.js
 */

Object.extend(Event, {
	KEY_SHIFT:    16,
	KEY_CONTROL:  17,
	KEY_CAPSLOCK: 20,
	KEY_SPACE: 32,
	keyPressed: function(event)
	{
		return Browser.isMSIE() ? window.event.keyCode : event.which;
	}
});

Browser = {
	isMSIE: function()
	{
		return (navigator.userAgent.toLowerCase().indexOf("msie") > -1) && !this.isOpera();
	},
	isOpera: function()
	{
		return navigator.userAgent.toLowerCase().indexOf("opera") > -1;
	},
	isMozilla: function()
	{
		return (navigator.userAgent.toLowerCase().indexOf("mozilla") > -1) && !this.isOpera() && !this.isMSIE();
	}
}

//shortcut for document.createElement()
function $$(elemType)
{
	return document.createElement(elemType);
}

Object.genGUID = function()
{
	var len = 8;
	if(!isNaN(parseInt(arguments[0]))) len = parseInt(arguments[0]);
	var chars = "abcdef0123456789";
	var output = "";
	while(output.length < len)
	{
		var rnd = Math.floor(Math.random() * (chars.length - 1));
		output += chars.charAt(rnd);
	}
	return output;
}