Commit
http://github.com/jquery/jquery/commit/542099a278e79dce38e814e7e7b448a1b73df82f (Make sure that we're doing proper focus bubble testing. Also simplified the logic for the IE focusin/focusout handling.) added jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ){ event.special[ orig ] = { Should that be jQuery.event.special?