Is there a way to block applications (or at least wait for user permission) from opening unwanted tabs? (like those annoying "Welcome to ..." or "You've successfully installed..." after installing/uninstalling a program, or even a Firefox addon). I just don't want Firefox opening tabs that I did not directly intended to open. Also, I've installed AdBlock Plus and Pop-up blocker is enabled, but still some websites allow pop-ups. How can I completely disable opening all stand-alone windows? Thanks in advance! :D