Xavier's Popup Killer will kill all annoying pop-up windows before they appear on the screen. The popup stopper has full support for both pop-ups and pop-under ads, and each time a pop up is closed you will hear a cute sound effect. To allow pop-up windows you can temporarily disable the pop-up killer by holding Control, Shift or 'a'. An unique Xavier's Popup Killer feature is that it will kill all pop ups and rotating banners ads from file shari