Hide the url bar on a pop up window
In Internet Explorer 7 and later, you cannot remove the address bar in Internet Zone windows, for security (anti-spoofing) reasons.
You cannot no longer hide the address bar in IE7. Read more about here in this MS article http://www.microsoft.com/windows/ie/community/columns/securityupgrade.mspx
You cannot do that in other browsers (Firefox, Chrome) also so even if you could do it in IE, it would have been pointless. Won't it?