This will stop all those annoying web sites from spawning unwanted new windows.

1. Go to about:config (type it in the address bar)
2. Set browser.tabs.showSingleWindowModePrefs to true (type “single” in the Filter to find it quickly)
3. Go to Tools > Options…
4. Select the Advanced tab
5. Check Force links that open new windows to open in:
6. Check the same tab/window as the link

Some people may not want to block the web site. To control whether or not a popup can actually pop under or not, there’s no need to change the setting in about:config above before making this change.

1. Go to Tools > Options…
2. Select the Web Features tab
3. Select the Advanced… button
4. Uncheck Raise or lower windows
5. I recommend you uncheck all of them, except for change images, but that’s your choice.


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by FastEddie