/*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("a");
    else links=document.getElementById(id).getElementsByTagName("a");
    for(i=0;i<links.length;i++)
    {
        Prepare(links[i]);
    }
}

function Prepare(el)
{
    var tooltip,t,b,s,l,temp1, temp2;
    t=el.getAttribute("title");
    if(t!=null && t.length > 0)
    {
        if (t.substring(0, 1) == "$")
        {
            t = t.substring(1);
            
            el.removeAttribute("title");
            tooltip=CreateEl("span","tooltip");
            s=CreateEl("span","top");

            temp1 = document.createElement('div');
            temp1.innerHTML = t;
            s.appendChild(temp1);

            tooltip.appendChild(s);
            b=CreateEl("b","bottom");
            l=el.getAttribute("href");

            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: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-100)+"px";
    document.getElementById("btc").style.left=(posx-360)+"px";
}