if(document.getElementById && document.createElement){
document.write('<style type="text/css">*.toggle{display:none}</style>');
}
function Attiva(id,s1,tipo,testoAlt){
var el=document.getElementById(id);
el.style.display="none";
var c=document.createElement(tipo);
var link=document.createElement("a");
link.href="#";
if (testoAlt) link.title=testoAlt
link.appendChild(document.createTextNode(s1));
link.onclick=function(){
    link.firstChild.nodeValue==s1
<!--    link.firstChild.style.fontWeight = (link.firstChild.style.fontWeight=="normal") ? "bold" : "normal";
    el.style.display=(el.style.display=="none") ? "block" : "none";
    return(false);
    }
c.appendChild(link);
el.parentNode.insertBefore(c,el);
}