for the name of the child list git-svn-id: svn://10.0.0.236/trunk@14333 18797224-902f-48f8-a5cc-f745e15eee43
added nsImageControlFrame to handle <input type=image>. git-svn-id: svn://10.0.0.236/trunk@14312 18797224-902f-48f8-a5cc-f745e15eee43