nice idear... Rated 4 out of 5 stars

But when i change the position of the addon-info the addon gets invisible!
I use Iseweasel 24.7.0.
Please check and update.

Rated 3 out of 5 stars

I can get it work on Firefox 30.0, but there is blank text on instruments toolbar; if I click over the blank space it shows what it should but the Total and Average label is missing. Please fix that