When I am in Firefox my Dock and the top menu hide. I have read forum after forum and have found no solution. I have gone into System Preferences and clicked the correct buttons but with no luck. I have to click on where the Dock is for it to show up. Same for the top menu. If I am surfing the web I can not have the top menu options up (i.e. File, History etc). Please help. What is the fix? I want them up permanently.