window.onload = function(){ enableTooltips() };

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);
	
	var links=document.getElementsByTagName("a");
	for (i=0; i<links.length; i++) {
		if (links[i].className.indexOf("bubbletooltip") != -1) {
			Prepare(links[i]);
		}
	}
}

function Prepare(el) {
	var tooltip,t,s;
	t=el.getAttribute("title");
	if(t!=null && t.length!=0) {
		el.removeAttribute("title");
		tooltip=CreateEl("span","tooltip");
		s=CreateEl("span","top");
		s.appendChild(document.createTextNode(t));
		tooltip.appendChild(s);
		tooltip.style.opacity="0.90";
		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 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+10)+"px";
	document.getElementById("btc").style.left=(posx-20)+"px";
}