var diffPosX = 0;
function enableBubles(id){
var links,i,h;
if(!document.getElementById || !document.getElementsByTagName) return;
h=document.createElement("span");
h.id="btc";
h.setAttribute("id","btc");
h.style.position="absolute";
document.getElementsByTagName("body")[0].appendChild(h);
if(id==null) links=document.getElementsByTagName("a");
else links=document.getElementById(id).getElementsByTagName("a");
for(i=0;i<links.length;i++){
    Prepare(links[i]);
    }
}

function Prepare(el){
	var buble,t,b,s,l,d;
	var postfix = "R";
	t=el.getAttribute("title");
	c=el.getAttribute("className") || el.getAttribute("class");
	if (c==null) return false;
	if (c.indexOf("bubleHelpL")!=-1 || c.indexOf("bubleHelpR")!=-1){
		postfix = (c.indexOf("bubleHelpL")!=-1)?"L":"R";
		//if(t==null || t.length==0) t="link:";  /*Prida do bublinky odkaz na link*/
		el.removeAttribute("title");
		buble=CreateEl("span","buble"+postfix);
		s=CreateEl("span","top");
		s.appendChild(document.createTextNode(t));
		buble.appendChild(s);
		b=CreateEl("b","bottom");
		l=el.getAttribute("href");
		if(l.length>30) l=l.substr(0,27)+"...";
		//b.appendChild(document.createTextNode(l));   /*Prida do bublinky odkaz na link*/
		buble.appendChild(b);
		setOpacity(buble);
		el.buble=buble;
		el.onmouseover=showBuble;
		el.onmouseout=hideBuble;
		el.onmousemove=eval('Locate'+postfix+';');
	}
}

function showBuble(e){
document.getElementById("btc").appendChild(this.buble);
if (!LocateL(e)) LocateR(e);
}

function hideBuble(e){
var d=document.getElementById("btc");
if(d.childNodes.length>0) d.removeChild(d.firstChild);
}

function setOpacity(el){
el.style.filter="alpha(opacity:90)";
el.style.KHTMLOpacity="0.90";
el.style.MozOpacity="0.90";
el.style.opacity="0.90";
}

function CreateEl(t,c){
var x=document.createElement(t);
x.className=c;
x.style.display="block";
return(x);
}

function LocateR(e){

var posx=0,posy=0;
if(e==null) e=window.event;
if(e.pageX || e.pageY){
    posx=e.pageX; posy=e.pageY;
    }
else if(e.clientX || e.clientY){
    if(document.documentElement.scrollTop){
        posx=e.clientX+document.documentElement.scrollLeft;
        posy=e.clientY+document.documentElement.scrollTop;
        }
    else{
        posx=e.clientX+document.body.scrollLeft;
        posy=e.clientY+document.body.scrollTop;
        }
    }
	document.getElementById("btc").style.top=(posy+10)+"px";
	document.getElementById("btc").style.left=(posx-10)+"px";
}

function LocateL(e){

var posx=0,posy=0;
if(e==null) e=window.event;
if(e.pageX || e.pageY){
    posx=e.pageX; posy=e.pageY;
    }
else if(e.clientX || e.clientY){
    if(document.documentElement.scrollTop){
        posx=e.clientX+document.documentElement.scrollLeft;
        posy=e.clientY+document.documentElement.scrollTop;
        }
    else{
        posx=e.clientX+document.body.scrollLeft;
        posy=e.clientY+document.body.scrollTop;
        }
    }
	document.getElementById("btc").style.top=(posy+10)+"px";
	document.getElementById("btc").style.left=(posx-187)+"px";
}