Unified Back-/Forward Button
Unified Back-/Forward Button provides a double-button with just one drop-down menu for navigating back and forward.Like this, you can see all the history of one tab and quickly navigate back and forward through it. If there are too many entries, you'll additionally get Fast-Rewind/Fast-Forward entries to skip intermediary pages.AFTER THE INSTALLATION, you'll have to CUSTOMIZE THE TOOLBAR and replace the traditional back-/forward-buttons with this new one.
Supported
versions: Firefox 1.5 - 2.0.0.* ALL, ALL
Notes / Comments: THEMES COMPATIBILITY: This extension should work with most themes - although it might look slightly out of place for some. Should that be the case for your theme, PLEASE CONTACT YOUR THEME'S AUTHOR. I simply don't have the time to hunt down all themes myself.
Categories: Miscellaneous, Navigation

One menu for back-/forward navigation (the current page is highlighted):
