function aprichiudi(item) {
   elem=document.getElementById(item);
   if(elem != null){
	   visibile=(elem.style.display!="none")
	   prefisso=document.getElementById("menu" + item);
	   if (visibile) {
		 elem.style.display="none";
		 prefisso.innerHTML="<img src='/assets/img/tree/cartella.gif' width='16' height='16' hspace='0' vspace='0' border='0'>";
	   } else {
		  elem.style.display="block";
		  prefisso.innerHTML="<img src='/assets/img/tree/cartellaaperta.gif' width='16' height='16' hspace='0' vspace='0' border='0'>";
	   }
   }
}

function espanditutto() {
   divs=document.getElementsByTagName("div");
   for (i=0;i<divs.length;i++) {
	 if(divs[i].id.indexOf('Sezione') != -1){
		 divs[i].style.display="block";
		 prefisso=document.getElementById("menu" + divs[i].id);
		 prefisso.innerHTML="<img src='/assets/img/tree/cartellaaperta.gif' width='16' height='16' hspace='0' vspace='0' border='0'>";
	 }
   }
}

function chiuditutto() {
   divs=document.getElementsByTagName("div");
   for (i=0;i<divs.length;i++) {
	 if(divs[i].id.indexOf('Sezione') != -1){
		 divs[i].style.display="none";
		 prefisso=document.getElementById("menu" + divs[i].id);
		 prefisso.innerHTML="<img src='/assets/img/tree/cartella.gif' width='16' height='16' hspace='0' vspace='0' border='0'>";
	 }
   }
}