MenuX is a Mozilla Firefox extension which collapses/shows all open toolbars in Firefox to maximize screen realestate for laptop users. MenuX defaults to overriding the Ctrl+L Open Location shortcut so it is possible to browse without any toolbars opened -- this can be changed under options. Options allow the user to select which toolbars to collapse/show. A right-click context menu allows toggling of toolbars. There might be a option for a floating transparent navigation control panel that floats on top of the browser window for mouse navigation. MenuX 0.1.0 is functional but not feature complete. Changed options are currently not saved.
Try it out, kick the tires and let me know what you think.