Sureshot PopUp Killer is an aggressive pop-up stopper preventing all annoying pop-up windows from appearing as you surf the web. The pop-up blocker has full support for both pop-ups and pop-under ads and will kill them even before they appear on the screen. To allow pop-up windows you can temporarily disable PopUp Killer by holding the Control or Shift key. PopUp Killer can be configured to start automatically after a reboot and resides in the system tray when minimized. Sureshot PopUp Killer is compatible with the most popular web browsers, such as Internet Explorer, Netscape Navigator, Opera, America Online (AOL), Mozilla and NetCaptor. You can customize PopUp Killer to stop pop-ups from any web browser. It is light on your system's resources and requires no setup! Pleasant surfing! Sureshot PopUp Killer is Windows 95/98/ME/NT/2000/XP compatible.