TonyU ... why not just use this:
on(release){
getURL ("javascript:NewWindow=window.open('yourPage.html','newWin','width=400,height=300,left=0,top=0,screenX=0,screenY=0,toolbar=No,location=No,scrollbars=No,status=No,resizable=No,fullscreen=No'); NewWindow.focus(); void(0); window.close()"

;
}
The only problem with it is that in IE you are going to get an alert saying the browser is trying to close your original window, and asking if you want to allow it to. The only way this WON'T happen is if you opened your original window (for the ad, I presume) with a javascript. In that case you shouldn't get the alert.
You can fiddle about with the attributes of the window to suit your requirements ...