Uppity for Firefox

Clicking either the button on the toolbar or status bar will move from one page to the next in that list. The keyboard shortcut ALT-Up will also navigate this way. Clicking the drop-down arrow next to the toolbar button will present that entire list, from where you can navigate directly to any of those options. The ALT-Down key will also open this list. Both of these buttons are disabled by default. So, pick which one you'd like to use and turn it on yourself. The statusbar button is controlled by the extension options. The toolbar button is controlled like any other toolbar button. Right click on your toolbar, choose Customize, and then just drag-and-drop the Uppity button to where you like it.

Requirements:

Firefox 4.0b12 - 4.0