not work Rated 5 out of 5 stars

does not work on version 4.0.11pre,,,,,,

Please add a function group tabs by domain in one tab - to look like the opera,,,,,,,
arrow next to the child tab to show/hide all tabs: http://zonefiles.eu/pliki/group1.jpg

This review is for a previous version of the add-on (0.1.2010121601.1-signed).