It took me some time to find this pop-under script a year or so back and I hope it help you out.
<script>//PopUnder Power
//Credit notice must stay intact for use.
//Paste this entire javascript between the <head> & </head> tags of your page,
//or option 2: Save it as an external file, "popunder.js", and call it from between
//the <head>&</head> tags of the parent page, with this command:
// <script src="/popunder.js" LANGUAGE="JAVASCRIPT">
// Visit
http://www.mikenew.net/downloads/scripts.asp for more scripts.
// by Mike New, with special thanks to
// Jeff Phillips of
http://classadrivers.com, for some good mods
// If you use this script, or make it better, I'd love to see it in action!
[email protected]
// Begin. Specify URLs to randomly select from and pop-under. Add or take away freely.
var popunder=new Array()
// example: popunder[0]="http://www.locker-room.com/purple/56530/";
popunder[1]="http://";
popunder[2]="http://";
popunder[3]="http://";
// Specify the width and height of new popunder window (in pixels).
var width = '1024';
var height = '768';
var p = 'scrollbars=yes,resizable=yes,toolbar=no,' + //these are obvious variables. set "yes" or "no".
'menubar=no,status=no,location=no,left=85,top=20,h eight=' + //the location on the user's screen
height + ',width=' + width;
// Load new PopUnder only once per browser session? (0=no, 1=yes)
// Putting 0 will cause the Popunder to load every time page is loaded
// Specifying 1 will cause it to load only once per session
var one_time=1
// That's it! Don't edit the code below unless you're really good. :-P //
function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { // if the cookie exists
offset += search.length
end = document.cookie.indexOf(";", offset); // set the index of beginning value
if (end == -1) // set the index of the end of cookie value
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(off set, end))
}
}
return returnvalue;
}
function loadornot(){
if (get_cookie('popunder')==''){
load_pop_power()
document.cookie="popunder=yes"
}
}
function load_pop_power(){
win2=window.open(popunder[Math.floor(Math.random()*(popunder.length))],"bw",p)
win2.blur()
window.focus()
}
if (one_time==0)
load_pop_power()
else
loadornot()
</script>