function enableTooltips(id){
	var links,i,h;
	if(!document.getElementById || !document.getElementsByTagName) return;
	AddCss();
	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("area");
	else links=document.getElementById(id).getElementsByTagName("area");

	for(i=0;i<links.length;i++){
        if (links[i].getAttribute("title")!=null && links[i].getAttribute("title")!="") Prepare(links[i]);
	}
}

function Prepare(el){
	var tooltip,t,b,s,l;
	t=el.getAttribute("title");
/*if(t==null || t.length==0) t="link:";*/
	el.removeAttribute("title");
	tooltip=CreateEl("span","tooltip");
	s=CreateEl("span","top");
	s.appendChild(document.createTextNode(t));
	tooltip.appendChild(s);
	b=CreateEl("b","bottom");
	if(el.getAttribute("mostrar")=="true"){
		l=el.getAttribute("href");
		if(l.length>30) l=l.substr(0,27)+"...";
		b.appendChild(document.createTextNode(l));
	}
	tooltip.appendChild(b);
	setOpacity(tooltip);
	el.tooltip=tooltip;
	el.onmouseover=showTooltip;
	/*el.onmousemove=Locate;*/
}


function showTooltip(e){
	document.getElementById("btc").appendChild(this.tooltip);
	Locate(e);
}

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

function setOpacity(el){
	if (document.all) {
 	el.style.filter="alpha(opacity:80)";
	el.style.KHTMLOpacity="0.80";}
	else {
	el.style.MozOpacity="0.80";
	el.style.opacity="0.80";
	}


}

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

function AddCss(){
	var l=CreateEl("link");
	l.setAttribute("type","text/css");
	l.setAttribute("rel","stylesheet");
	l.setAttribute("href","CSS/Info.css");
	l.setAttribute("media","screen");
	document.getElementsByTagName("head")[0].appendChild(l);
}

function Locate(e){
	var posx=0,posy=0;
	if(e==null) 
	{
		e=window.event;
		if(e==null) 
		{
			alert('nulo')
		}
	}
	
	//var myEvent = window.event ? window.event : aEvent;
	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-20)+"px";
	/*z-index*/
	document.getElementById("btc").style.zIndex = 5; 

}