now uget the new focused content's frame instead of using the mCurrentTarget. The mCurrentTarget is correct for a mouse down but incorrect for a "tab". This is because the mCurrentTarget points at the currently focused content for a tab event, instead of the new content. r=joki, bug 11162 git-svn-id: svn://10.0.0.236/trunk@51190 18797224-902f-48f8-a5cc-f745e15eee43