This javascript code will allow you to automatically popup a browser window which is thrown behind the current window viewing. Then as an added bonus you may automatically time it to close itself. You get full control over the size variables and toolbar. 

This can be used to automatically show a sponsor site how much great traffic comes from your site. Although this is deceptive we post this because viewers request it. 

Insert this code into your HEAD of HTML

<!-- // == This Script Free To Use Providing This Notice Remains == // // == This Script Has Been Found In The http://www.DesignerWiz.com Javascript Public Archive Library == // // == NOTICE: Though This Material May Have Been In A Public Depository, Certain Author Copyright Restrictions May Apply == // --> <script language="JavaScript" type="text/javascript"> <!-- browserVer = parseInt(navigator.appVersion); HB=window.open('http://www.iquesthosting.com','HBback','toolbar=1,location=1,status=1,menubar=1,scrollbars=1,resizable=1,width=500,height=300'); if( browserVer >= 4) { window.focus() ; } setTimeout ("closewindow()", 30000);function closewindow(){ HB.close();} //--> </script>

Simply Cut and Paste code snippet
Be sure to properly place script position in HEAD of html
Working example with code here

This script has been in the DesignerWiz.com Public Library.