<script type="text/javascript">
function startNifty(){
if(!NiftyCheck())
return;
Rounded("div#content_box","all","transparent",""," border #999");
}
</script>
<body onLoad="setmenus();startNifty();">

oppure....

<script type="text/javascript">
window.onload=function(){
setmenus();
if(!NiftyCheck())
return;
Rounded("div#content_box","all","transparent",""," border #999");
}
</script>
<body>

ciao