I've started using the shavenFerret script and it can get a little unruley when it comes to popups and Javascript errors. Solution... Opera 6. Since it has an MDI type interface, all the clutter of popups is containing within the app. Also, you do not get the IE 5/6 Access Denied Javascript error when the frame that has the site being submitted to tried to access it's parent object.
http://www.opera.com