See if one of these artivcles is helpful

• Navigation buttons like back, home, bookmarks and reload are missing
• Customize Firefox controls, buttons and toolbars
• Customize Firefox controls, buttons and toolbars

If the menu bar is hidden then press the F10 key or hold down the Alt key to make the menu bar appear.

Make sure that toolbars like the "Navigation Toolbar" and the "Bookmarks Toolbar" are visible:

• "View > Toolbars"

Open the Customize window to set which toolbar items to display:

• View > Toolbars > Customize
• Firefox > Options > Toolbar Layout

• Check that the "Bookmarks Toolbar items" is on the Bookmarks Toolbar
• If the "Bookmarks Toolbar items" is not on the Bookmarks Toolbar then drag it back from the toolbar palette in the customize window to the Bookmarks Toolbar

• If missing items are in the toolbar palette then drag them back from the Customize window on the toolbar
• If you do not see an item on a toolbar and in the toolbar palette then click the "Restore Default Set" button to restore the default toolbar set up

You can check for problems with the localstore.rdf file if this didn't fix it.

• http://kb.mozillazine.org/Corrupt_localstore.rdf

I need help too. Mine has disappeared after 1/15/13

Did you check out the suggestions in my above reply?

Yes, it was a simple fix.. but just couldn't think of it on my own. Thank you for being there.