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){

//Dichiarazione variabili ---------------------
//t:title |||| s:span<--title |||| b,l:niente

var tooltip,t,s,s2;

var testo_title=CreateEl("span","classe_span");

var img_wls;
img_wls=CreateEl("img","classe_img");
img_wls.src="ToolTipImages/w_animata.gif";

//img_wls.style.padding="5px 80px 5px 80px";

var img_top;
img_top=CreateEl("img","");
img_top.src="ToolTipImages/toptip.gif";

var img_bottom;
img_bottom=CreateEl("img","");
img_bottom.src="ToolTipImages/bottomtip.gif";

var tbl     = document.createElement("table");
var tblBody = document.createElement("tbody");
var row = document.createElement("tr");
var cellA = document.createElement("td");
var cellB = document.createElement("td");
cellA.setAttribute("valign","top");
cellA.setAttribute("align","center");
cellB.setAttribute("align","center");

//----------------------------------------------

t=el.getAttribute("title");
if(t!=null && t.length!=0) {
el.removeAttribute("title");
tooltip=CreateEl("span","tooltip");

testo_title.appendChild(document.createTextNode(t));

cellA.appendChild(img_wls);
cellB.appendChild(testo_title);
row.appendChild(cellA);
row.appendChild(cellB);
tblBody.appendChild(row);
tbl.appendChild(tblBody);
tbl.style.display="block";

s=CreateEl("span","classe_table");

s.appendChild(tbl);

/*s2=CreateEl("span","classe_span");
s2.appendChild(img_wls);
s.appendChild(document.createTextNode(t));*/

tooltip.appendChild(img_top);
//tooltip.appendChild(s2);
tooltip.appendChild(s);
tooltip.appendChild(img_bottom);

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","ToolTips_css.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";
}