/*
find actual version of this library at:
http://www.fczbkk.com/js/dom/

modded by .::]|DEAD|[::.Screamer
*/

function newElement(name)
{
	return document.createElement(name);
}

function newTextNode(text)
{
	return document.createTextNode(text);
}

function getElement(id)
{
	return document.getElementById(id);
}

/*
try{HTMLElement;}catch(e){window.HTMLElement={};}
if(!HTMLElement.prototype)
	HTMLElement.prototype={};

HTMLElement.prototype.getElementsByFunction=function(func, param, recursive)
{
	if(recursive==null)recursive=true;
	var arr=[];
	for(var x=0;x<this.childNodes.length;x++)
	{
		if(func(this.childNodes[x],param))arr.push(this.childNodes[x]);
		if(recursive && this.childNodes[x].getElementsByFunction)arr=arr.concat(this.childNodes[x].getElementsByFunction(func,param,recursive));
	}
	return arr;
}

HTMLElement.prototype.getElementsByClassName=function(clsName, recursive)
{
	return this.getElementsByFunction(cls.has,clsName,recursive);
}

HTMLElement.prototype.getElementsByAttributes=function(attrs, recursive)
{
	return this.getElementsByFunction(hasAttributes,attrs,recursive);
}
*/

function hasAttributes(elmt, attrs)
{
	if(!elmt.getAttribute)
		return false;
	for(var key in attrs)
		if(elmt.getAttribute(key)!=attrs[key])
			return false;
	return true;
}

function cloneNode(obj, document)
{
	if(obj.nodeName=='#text')return obj.cloneNode(true);

	var newObj=document.createElement(obj.tagName);
	for(var x=0;x<obj.attributes.length;x++)
		newObj.setAttribute(obj.attributes[x].name,obj.attributes[x].value);
	for(var x=0;x<obj.childNodes.length;x++)
		newObj.appendChild(cloneNode(obj.childNodes[x],document));
	return newObj;
}

obj=
{
	fix:function(o)
	{
		if(!o.getComputedStyle)o.getComputedStyle=function()
		{
			if(window.getComputedStyle)return document.defaultView.getComputedStyle(o,null);
			if(o.currentStyle)return o.currentStyle;
			return o.style;
		}
	}
}

xml=
{
	getRequest:function()
	{
		try{if(window.XMLHttpRequest)return new XMLHttpRequest;}catch(e){}
		try{if(window.ActiveXObject)return new ActiveXObject("Microsoft.XMLHTTP");}catch(e){}
		try{if(window.createRequest)return window.createRequest();}catch(e){}
		return false;
	}
}

Array.from=function(obj)
{
	var array=[];
	for(var prop in obj)
	{
		try{array[prop]=obj[prop];}
		catch(e){}
	}
	return array;
}

// library for cross-browser event management
evt=
{
	// attach event
	add:function(obj, evType, fn, useCapture)
	{
		obj=evt.fixObj(obj);

		if(obj.addEventListener)
		{
			obj.addEventListener(evType, fn, useCapture);
			return true;
		}
		if(obj.attachEvent)
			return obj.attachEvent('on'+evType, fn);

		return false;
	},

	// remove event
	remove:function(obj, evType, fn, useCapture)
	{
		obj=evt.fixObj(obj);
		
		if(obj.removeEventListener)
		{
			obj.removeEventListener(evType,fn,useCapture);
			return true;
		}
		if(obj.detachEvent)
			return obj.detachEvent('on'+evType,fn);

		return false;
	},
	
	// fix for IE event model
	fix:function(e)
	{
		if(typeof e=='undefined')e=window.event;
		if(typeof e.target=='undefined')e.target=e.srcElement;
		if(typeof e.layerX=='undefined')e.layerX=e.offsetX;
		if(typeof e.layerY=='undefined')e.layerY=e.offsetY;
		if(typeof e.which=='undefined' && e.keyCode)e.which=e.keyCode;

		// thanx to KKL2401 for preventDefault hack
		if(!e.preventDefault)
			e.preventDefault=function(){this.returnValue=false;}

		return e;
	},
	
	fixObj:function(o)
	{
		// Opera hack
		if(window.opera && o==window)
			o=document;

		return o;
	}
}


// library for working with multiple classes
var cls=
{
	// vrati pole obsahujuce vsetky triedy daneho elementu
	get:function(elm)
	{
		if(!elm || !elm.tagName)
			return false;
		if(!elm.className)
			return [];

		// na zaklade Centiho upozornenia o divnej interpretacii v Opere
		return elm.className.replace(/\s+/g,' ').split(' ');
	},

	// vrati true, ak element obsahuje triedu
	has:function(elm, cl)
	{
		var actCl=cls.get(elm);
		if(actCl && typeof cl=='string')
		{
			for(var i=0;i<actCl.length;i++)
				if(actCl[i]==cl)return true;
		}
		return false;
	},

	// prida triedu elementu
	add:function(elm, cl)
	{
		if(typeof cl!='string')
			return false;

		if(!cls.has(elm,cl))
			elm.className+=elm.className?' '+cl:cl;
		return true;
	},

	// odstrani triedu z elementu
	remove:function(elm, cl)
	{
		var actCl=cls.get(elm);
		if(!actCl || typeof cl!='string')
			return false;

		for(var i=0;i<actCl.length;i++)if(actCl[i]==cl)
		{
			delete actCl[i];
			break; //zakomentuj, jestli mas problemy s vicenasobnym definovanim trid (napr.: <br class="first second third second" />)
		}
		elm.className=actCl.join(' ');

		return true;
	},
	
	// nahradi staru triedu elementu novou, ak stara neexistuje, prida novu
	replace:function(elm, oldCl, newCl)
	{
		if(typeof oldCl!='string' || typeof newCl!='string')
			return false;

		if(oldCl!=newCl)cls.remove(elm,oldCl);
		cls.add(elm,newCl);

		return true;
	}
}