How do I get the tab bar at the bottom of the screen (right above the task bar) WITHOUT Tab Mix Plus?

Question

''locking - please stick with your original thread about this problem - https://support.mozilla.org/en-US/questions/934590''
I like having the tab bar at the bottom of the screen; I use the task bar AT THE BOTTOM to switch between programs, so I want the the tab bar AT THE BOTTOM to switch between web pages. The only way I've found to get the tab bar at the bottom of the screen is the extension Tab Mix Plus. I used it for a long time, and it worked great.
Unfortunately, when I recently updated to Firefox 14.0.1, I encountered an error: I could no longer middle-click on a link to open it in a new tab (which I do ALL the time). After some troubleshooting, I found that it was being caused by some incompatibility between Firefox 14.0.1 and Tab Mix Plus; upon removing Tab Mix Plus, my middle-clicking was back to normal.
But without Tab Mix Plus, I'm back to having the tab bar at the top of the screen. I've searched and searched, and I can't find anything besides Tab Mix Plus that will let me put the tab bar at the bottom of the screen. I've found tons of stuff about the option "tabs on top", but that has to do with putting the tab bar above/below the navigation bar--it's still at the top of the SCREEN either way.
What can I do?

Answer 1

Reset the pref <b>layout.scrollbar.side</b> to '0' or set to '2' to place the scroll bar at the default right side.
See:
* http://kb.mozillazine.org/layout.scrollbar.side
* http://kb.mozillazine.org/about%3Aconfig
Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]
* [[Troubleshooting plugins]]