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("a");
	} else {
		//links = document.getElementById(id).getElementsByTagName("a");
		mylink = document.getElementById(id);
	}

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

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

	t = el.getAttribute("title");
	
	if(t == null || t.length == 0) t = "No description provided.";
	
	el.removeAttribute("title");
	
	tooltip	= CreateEl("span","tooltip");
	s		= CreateEl("span","top");
	s2		= CreateEl("span","content");

	s2.appendChild(document.createTextNode(""));
	tooltip.appendChild(s);
	tooltip.appendChild(s2);
	
	s2.innerHTML = t;
	
	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:100)";
	el.style.KHTMLOpacity="1.00";
	el.style.MozOpacity="1.00";
	el.style.opacity="1.00";
	
	//el.style.filter="alpha(opacity:95)";
	//el.style.KHTMLOpacity="0.95";
	//el.style.MozOpacity="0.95";
	//el.style.opacity="0.95";
}

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";
}