@midgo Rated 5 out of 5 stars
I just tried your posted version and it works like a charm in my firefox 12 nightly :-) therefore I think it should work well with all the other versions of firefox too
p.s. I'm a linux user but the addon should wok well with all operating systems
edit: I can't believe I forgot to write this but of course Midgo you have my deepest gratitude for making this addon once again compatible with the latest firefox versions, you made my day!