Rated 5 out of 5 stars

This add-on is still working great in Fx 18.

To change the <em:maxVersion> follow the instructions on this website:
http://www.techsupportalert.com/content/how-update-firefox-thunderbird-addons-n

You may have to restart Fx a couple of times fot the new title to show up.

Still Works Just Fine in 10.0.2 Rated 5 out of 5 stars

This add-on still works just fine in Firefox version 10.0.2 but you will need to change the <em:maxVersion> to 10.* or higher in the install.rdf file.