Toolbar Autohide 220.127.116.11-signed
Enables automatic hiding of toolbars (tabs, navigation, bookmarks and add-on bar) via context menu options. When hiding, toolbars will appear when the mouse is at the top of the window or when activated by keyboard (e.g. Ctrl-l, Ctrl-k, F10).
This add-on is not compatible with your version of Firefox because of the following: