Popup Killer

Why recoverable popup killer is the best

Popup killer automatically blocks annoying popup ad windows. A pitfall with most popup killers is that some popup windows are not ads but they are killed by mistake. This is undesirable even with the aid of a white list. This problem is solved ideally by recoverable popup killer. Whenever a popup ad is detected, it will be suppressed in a hidden state, i.e., deprived of the power to burden your eyes. Meanwhile, a toolbar icon will be flashed and you will hear an optional beep sound. If you think you may have lost a useful popup window, just click a button to recover the last hidden popup window. The popup window will be permanently killed if it's not manually recovered after a particular time. This mechanism of popup window blocking also eliminates all script errors which are often induced by immediately killing popup windows. 

Identification

Recoverable popup killer identifies popup ads by two kinds of mechanism. 

Popup window identification by timing
Any window popped up spontaneously will be identified as an undesirable popup window. A popup window is considered to be spontaneous if it doesn't immediately follow user actions like mouse clicks and keystrokes.
Popup window identification by appearance
Site windows without menu bar,  toolbar, status bar, or address bar will be recognized as undesirable popup windows.

Pre-defined Filtering

You can also aid the popup killer with predefined filtering. Sites matching the black list will be unconditionally considered as popup ads while sites matching the white list will never be considered as popup ads.  

Notification

Whenever a popup window is detected, an icon will flash on the toolbar. Simultaneously, you will hear an optional beep sound.

Recover Useful Popup Windows

When you receive the notification which indicates a popup window has been blocked and you feel you may have lost some desirable site windows, you can manually recover the last popup window by selecting "Recover Last Popup Window" from the menu or toolbar. The last-blocked popup window will be brought back immediately. No reconnection is needed.

You can also choose to recover any popup windows that haven't been permanently killed yet in the hidden sites dialog.