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";
	//h.style.z-index = "1000";
	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]);
	}
}

var tooltip;

function Prepare(el)
{
	var t,b,s,l;
	t=el.getAttribute("title");
	if(t==null || t.length==0)
		return;
	el.removeAttribute("title");
	tooltip=CreateEl("span","tooltip");
	s=CreateEl("span","top");
	s.appendChild(document.createTextNode(t));
	tooltip.appendChild(s);
	b=CreateEl("b","bottom");
	l=el.getAttribute("href");
	//if(l.length>28) l=l.substr(0,25)+"...";
	//	b.appendChild(document.createTextNode(l));
	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="0.90";
	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 AddCss()
{
	var l=CreateEl("link");
	l.setAttribute("type","text/css");
	l.setAttribute("rel","stylesheet");
	l.setAttribute("href","css/bt.css");
	l.setAttribute("media","screen");
	document.getElementsByTagName("head")[0].appendChild(l);
}

function Locate(e)
{
	var posx=0,posy=0;
	var adjustX = 0;
	var adjustY = 0;
	
	if(e==null) 
		e=window.event;
		
	if (navigator.appName.indexOf("Internet Explorer") != -1)
	{
		var targElem = (e.target) ? e.target : e.srcElement;	
	
		if(targElem)
		{		
			if(targElem.id.indexOf("Top") != -1)
			{
				var adjustX = 20;
				var adjustY = -100;
				document.getElementById("btc").background = "btt.gif";
			}	
		}
	}

	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 + adjustY) + "px";
	document.getElementById("btc").style.left=(posx -20 + adjustX) + "px";
}