Packed Menu is a Firefox extension that adds a button "M" to the menu bar. And the original main menus are hidden. When you click the "M" button or press Alt-M, the original main menus are shown under the "M" button.
This extension has nearly no impact to the Firefox's performance. All it does is just adding a menu "M" to the tool-bar and moving the original "main menu bar" to the popup of the menu "M".
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· Mozilla Firefox
What's New in This Release: [ read full changelog ]
· Support for Firefox 4.0 Beta.