try looking here for the script
Http://java-scripts.net what were i got my count down timer that redirects
<!--Customize the time (90) and dest URL to your own-->
<script language="Javascript">
<!--
/*
This credit must stay here for use
For this script, visit java-scripts.net
or
http://wsabstract.com
*/
var countdown = "10"
function doCount() {
if (countdown > 0) {
countdown--
}
else {
document.location = "yourpage.html"
}
window.status=countdown + " countdown to doom."
setTimeout('doCount()',1000)
}
doCount()
//-->
</SCRIPT>
edit there the script