If you mean the built-in toolbars of Firefox and it got hidden, you can enable them again easily. The first section of https://support.mozilla.com/en-US/kb/how-do-i-customize-toolbars explains how this is done.

You User Agent shows that you are using Firefox 3.6.20. There hasn't been any such Firefox version.

Reset User Agent

• https://support.mozilla.com/en-US/kb/Websites%20or%20add-ons%20incorrectly%20report%20incompatible%20browser

Finding your Firefox version

• https://support.mozilla.com/en-US/kb/Finding%20your%20Firefox%20version

Common Questions after Updating Firefox

• https://support.mozilla.com/en-US/kb/common-questions-after-updating-firefox

Check and tell if its working.

Firefox 3.6.20 Release notes-

http://www.mozilla.com/en-US/firefox/3.6.20/releasenotes/

You have a nasty piece of virtual malware FBSMTWB(Fast Browser Search Makes The Web Better!). Someone should come by with the best way to get rid of it.

Try Google or the Search Firefox Help box above if you have any doubts. It is associated with Fun Web Products and My Web Search amongst other nasties.

To Remove/Uninstall FBSMTWB, see these:

Uninstalling Add-ons

• https://support.mozilla.com/en-US/kb/Uninstalling%20add-ons

Cannot Uninstall an Add-on

• https://support.mozilla.com/en-US/kb/Cannot%20uninstall%20an%20add-on

Troubleshooting extensions and themes

• https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

Check and tell if its working.