bob fubzeca lo stesso.....

<HEAD>
<script>
function show(){
document.all.livello.style.visibility="visible";
setTimeout('hide()','3000');
}

function hide(){
document.all.livello.style.visibility="hidden";
}
</script>
</HEAD>

<BODY onLoad="setTimeout('show()','3000')">
<div id="livello" style="visibility:hidden">
[img]img.jpg[/img]
</div>
</BODY>