Mighty Joe's Firefox - Tried and True!

Menu Editor is an important extension because the context menu for Firefox keeps expanding when you install extensions. Eventually it gets so large that it’s hard to get at the menu functions that you need. The “context menu” is the menu that presents itself when you right click on a web page. This is the most important menu to edit, however, Menu Editor allows you to edit every menu available within Firefox. You can select and deselect items that you don’t want to be on your menu. Once you install the extension, open the extension window and select the Menu Editor extension, then open the options function and select which functions you want to show up on your menu. It’s easy to configure and solves an important problem for Firefox. Everyone should install and configure this extension.

https://addons.mozilla.org/extensions/moreinfo.php?id=710