Sorry but I don't have this option on my mac ...
Just a link for a screenshot : http://upz.fr/bpHUn.png

When I try to click in the different tab when I'm using Opera in fullscreen, I fail so many time by going too much in the top of the screen and open the OS X menu.

So, I want to know if you can propose an option for switch the address bar and the tab bar.

Thanks.