Pop up in apertura in ritardo

nel <head>

code:--------------------------------------------------------------------------------
<script>
function popup()
{
setTimeout("window.open('pagina. html','newWin','scrollbars=no,status=no,
resizable=no,top=100,left=150,width=500,
height=250');",5000);
}
</script>

--------------------------------------------------------------------------------


nel <body>

code:--------------------------------------------------------------------------------

<body onload="popup()"
--------------------------