/*javascript for Bubble Tooltips by Alessandro Fulciniti
- http://pro.html.it - http://web-graphics.com */

function WSR_getElementsByClassName(_2,_3,_4){
var _5=(_3=="*"&&_2.all)?_2.all:_2.getElementsByTagName(_3);
var _6=new Array();
_4=_4.replace(/\-/g,"\\-");
var _7=new RegExp("(^|\\s)"+_4+"(\\s|$)");
var _8;
for(var i=0;i<_5.length;i++){
_8=_5[i];
if(_7.test(_8.className)){
_6.push(_8);
}
}
return (_6);
}


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 = WSR_getElementsByClassName(document,"a","previewlink");
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==null || t.length==0) t="link:";
tooltip=CreateEl("span","tooltip");
s=CreateEl("span","top");
var img = document.createElement("img")
img.style.paddingTop="0";
img.style.paddingLeft="0";
img.style.paddingBottom="0";
img.style.paddingRight="0";
img.style.margin="auto";
img.style.marginTop="-80px";
img.style.marginLeft="44px";
img.style.marginBottom="0px";
img.style.marginRight="0px";
img.style.borderTop="0";
img.style.borderLeft="0";
img.style.borderBottom="0";
img.style.borderRight="0";
img.setAttribute("src",el.getAttribute("title"));
el.removeAttribute("title");
img.setAttribute("width",140);
img.setAttribute("height",140);
img.setAttribute("alt","Snapshot");
s.appendChild(img);
tooltip.appendChild(s);
b=CreateEl("b","bottom");
l=el.getAttribute("href");
if(l.length>30) l=l.substr(0,27)+"...";
b.appendChild(document.createTextNode(l));

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+10)+"px";
document.getElementById("btc").style.left=(posx+10)+"px";
}