Jan 29

Ever wanted to get rid of the address bar in your popup windows generated by JavaScript within IE7? Bad news, is that you can’t. IE7 will enforce the address bar to be shown and you simply can’t change it; It is a security feature.

We think the address bar is also important for users to see in pop-up windows. A missing address bar creates a chance for a fraudster to forge an address of their own. To help thwart that, IE7 will show the address bar on all internet windows to help users see where they are. IE7 will also help users avoid fraudulent sites if users choose to use the Phishing Filter to check a site for known phishing activity.

(http://blogs.msdn.com/ie/archive/2005/11/21/495507.aspx)