PopUp Blocker for Windows
Simply install Blue Squirrel's PopUp Blocker, and the program goes to work
to enhance your online surfing experience; by eliminating all pop-up and
pop-under windows from appearing as you browse the web. PopUp Blocker
also detects and stops pop up windows opened by popular file sharing
programs such as Kazaa, Kazaa Lite, Morpheus, Grokster, iMesh and others.
You can view reports of all windows blocked, and temporarily disable
the blocking mechanism to look at Pop-up Windows.