Orthodox
click the .xpi to install. Works with 2.39. Might need to be used in conjunction with http://pastebin.com/SzVxMkrA
on operating systems other than OS X, you may need to swap the navigator/tabbrowser.css and tabbrowser_windows.css
click the .xpi to install. Works with 2.39. Might need to be used in conjunction with http://pastebin.com/SzVxMkrA
on operating systems other than OS X, you may need to swap the navigator/tabbrowser.css and tabbrowser_windows.css