Want to change up how you use Firefox? Some other browsers did the whole “tabs on the bottom” thing – and yes, Firefox can even pull off this trick with a little hacking around with the UserChrome.css file.

Here is what you need to add to your UserChrome.css file to get this to work:
/* Display the tabbar at the bottom */
#content > tabbox { -moz-box-direction: reverse; }
You can also move the tab bar to your left or right too, just in case you want to really try something different.



Is there any way to put tab bar above bookmarks bar?
http://i5.tinypic.com/8amelx2.jpg
I use the Tab Mix Plus extension which has an option to move the tabs to the bottom – and lots of other handy options too. I wouldn’t surf without it.
I really did try it for a while, but I kept freaking out because I kept thinking I had lost my tabs.. no wait, oh yeah they are at the bottom. LOL
Note that this Left/Right does not work for Firefox 2.0b2 and newer. With wide screens this is wery bad lack.
Anyone know how to move the bookmark bar to the bottom?