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In Firefox’s fullscreen mode, toolbars and the tab strip may be hidden at the top of the screen and only shown on mouseover. This preference determines whether they should autohide.

Possible values and their effects


Automatically collapse toolbars and the tab strip in fullscreen mode and only show on mouseover. (Default)


Always show the toolbars and tab strip in fullscreen mode.

First checked in

2008-03-08 by Reed Loden (patch by Michael Ventnor)

Has an effect in

  • Firefox (nightly builds since 2008-03-08)

Related bugs

Related preferences