It was a nice extension... Rated 4 out of 5 stars

...but the current version destroys the firefox layout!
https://picasaweb.google.com/lh/photo/6SIGsjt1qlP53ai-yIq7HijRkkcgOEuEPU23BSdMBXI?feat=directlink

This review is for a previous version of the add-on (1.28.1-signed.1-signed).