/*javascript for Bubble Tooltips by Alessandro Fulciniti
- http://pro.html.it - http://web-graphics.com */
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("acronym");
else links=document.getElementById(id).getElementsByTagName("acronym");

	for(i=0;i<links.length;i++)
	{
		Prepare(links[i]);
	}
}


function Prepare(el){
var tooltip,t,b,s,l;

t=el.getAttribute("title");

if (t)
{
	el.removeAttribute("title");
	tooltip=CreateEl("span","tooltip");
	s=CreateEl("span","top");
	s.innerHTML = t;
	tooltip.appendChild(s);
	b=CreateEl("b","bottom");
	tooltip.appendChild(b);
	setOpacity(tooltip);
	el.tooltip=tooltip;
	el.onmouseover=showTooltip;
	el.onmouseout=hideTooltip;
	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){
el.style.filter="alpha(opacity:90)";
el.style.KHTMLOpacity="0.9";
el.style.MozOpacity="0.9";
el.style.opacity="0.9";
}

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","bt.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.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+11)+"px";
document.getElementById("btc").style.left=(posx-200)+"px";
}