Mozilla Firefox Add ons ?

I am a great fan of Mozilla and i fill my browser with all sorts of add-ons !! my browser in the laptop had an add-on that enabled box like 3D movement when i switched my tabs !!! May i know which add-on that was and i cant find it !! my laptop is not working now and so i have a new one !! but i want that add-on... show more I am a great fan of Mozilla and i fill my browser with all sorts of add-ons !! my browser in the laptop had an add-on that enabled box like 3D movement when i switched my tabs !!! May i know which add-on that was and i cant find it !! my laptop is not working now and so i have a new one !! but i want that add-on !!! CAN ANY ONE HELP !!! THANKS ALL IN ADVANCE :)
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