The F11 key toggles Full Screen Mode on and off '''''OR''''' move your cursor to the top edge of your monitor screen, some toolbars will display, right-click in a blank space on a toolbar and choose "Exit Full Screen Mode. See http://kb.mozillazine.org/Netbooks#Full_screen '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You need to update some plug-ins: *Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/ *Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox]