Fix for bgo#618863 - Table structural navigation not working with th element in Firefox 3.6
Fix for bgo#618863 - Table structural navigation not working with th element in Firefox 3.6

h4ck3rm1k3/orca-sonar,pvagner/orca,pvagner/orca,chrys87/orca-beep,chrys87/orca-beep,h4ck3rm1k3/orca-sonar,chrys87/orca-beep,GNOME/orca,GNOME/orca,GNOME/orca,chrys87/orca-beep,GNOME/orca,h4ck3rm1k3/orca-sonar,pvagner/orca,pvagner/orca