Firefox 3.6+ versions have a feature to allow the user to hide the Menu bar. Hit the '''Alt''' key to temporarily show the Menu bar, then open View > Toolbars and select Menu bar, so it has a check-mark. <br /> The F10 can also be used on most PC's to temporarily reveal the Menu bar. https://support.mozilla.com/en-US/kb/Menu+bar+is+missing

'''''"CANNOT GO BACK TO PREVIOUS PAGE NOR FORWARD"''''' That part is the Navigation Toolbar; see: https://support.mozilla.com/en-US/kb/Back+and+forward+or+other+toolbar+items+are+missing ------------------------------- <br /> You are 2 versions behind on Java. The version you have installed has known security issues. You should update Java. * Next Generation Java Plug-in 1.6.0_20 for Mozilla browsers #'''Check your plugin versions''': http://www.mozilla.com/en-US/plugincheck/ #*'''Note: plugin check page does not have information on all plugin versions''' #'''Update Java:''' #* Download and update instructions: https://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox #* Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml #* After the installation, start Firefox and check your version again.