allow single argument for frameURL or dialogURL (omitting title)
allow single argument for frameURL or dialogURL (omitting title)

atk4/atk4,samratcis/atk4,xepan/atk4,samratcis/atk4,samratcis/atk4,svisystem/atk4,atk4/atk4,atk4/atk4,svisystem/atk4,svisystem/atk4,xepan/atk4,atk4/atk4,xepan/atk4