window.onload = function(e) {startLoop();}
window.onunload = function(e) {clearInterval(threadFinanza);}
//*** loop finanza ***
var threadFinanza;
var currIndex = 1;
function stopLoop(id){clearInterval(threadFinanza);impostaVisibilita(id,'visible');if (currIndex!=id) impostaVisibilita(currIndex,'hidden');currIndex=id;}
function startLoop(){clearInterval(threadFinanza);threadFinanza = setInterval('looppa()',3000);}
function impostaVisibilita(id, visibilita)
   // "visible" ed "hidden" sono i valori validi da passare alla var visibilita
   {
   if (document.all) document.all['finanza'+id].style.visibility=visibilita;
   else if (document.layers) document.layers['finanza'+id].visibility=visibilita;
   else if (document.getElementById) document.getElementById('finanza'+id).style.visibility=visibilita;}
function looppa()
	{
	if (currIndex>0) {
		impostaVisibilita(currIndex, 'hidden');
		if (currIndex<4) currIndex++;
		else currIndex = 1;
		impostaVisibilita(currIndex, 'visible');
		}
	else currIndex = 1;
	}