The Dark Squirrel of the Sith is stuck on how to do timed popups. Lets say I following code:

<!-- Start of Back Console -->
<script language="JavaScript">
<!--
browserVer = parseInt(navigator.appVersion);
SX=window.open('http://topsites.albinotreefrog.net/out.php?site=1022974165',
'SXback','toolbar=1,location=1,status=1,menubar=1,'+
'scrollbars=1,resizable=1,width=500,height=300');

if( browserVer >= 4) {
window.focus() ;
}
// -->
</script>
<!-- End of Back Console -->


I want this to pop only once every 24 hours per unique visitor, how do I do this?