codice:
function vedi(cosa) {
	document.getElementById(cosa).style.visibility= 'visible';
	if(!e) e = window.event
	mouseX = e.clientX+(window.opera?0:document.body.scrollLeft)
	mouseY = e.clientY+(window.opera?0:document.body.scrollTop)
	document.getElementById(cosa).style.top=''+mouseY+'px';
	document.getElementById(cosa).style.left=''+mouseX+'px';
}
ciao