Unofficial Version until FF 3.7.* Rated 1 out of 5 stars

Support: 0 stars
Function: 5 stars

As this Add-on is not supported anymore by its author and also the file suggested bei kHoeTh1sW0rks is not available no longer I tryed something myself.
I created a version 0.0.14.hpk which works flawlessly on my systems under WinXP SP3.
It is available in a Zip-file under the following link:
http:hpk.homepage.bluewin.ch/download/firefox.html