Rated 5 out of 5 stars

How to make it work with newer Firefox (UPDATED)

1. Download the addon as a normal file (don't install it)
2. Change its extension from xpi to zip.
3. Unpack the archive to a folder
4. Browse the folder and look for install.rdf
5. Edit the file with notepad
6. Change the line where you see "maxVersion" from:
3.5.*
to
3.6.*
7. Save the file
8. Repack the folder with zip archiver or winrar
9. Change its extension back to .xpi
10. Drag & drop the addon on firefox window to install it
OR (if your browser won't let you do this)
11. From the menubar select File > Open file and select the addon

This user has a previous review of this add-on.