ARG! SHOULD BE SO EASY TO FIX! TAB PROBLEM...

[Battleships]

usually when i ckick a link it will open it in the same tab, but not if i use the google search engine! that will produce a new tab and go straight to it

I've been through all the options, have i missed something? i just want to move back and forth within one tab with my mouse side buttons, rather than opening so many!

thanks for any help