Listener Test

    local messages = display.newGroup()
    function messages:Chapter(event)
        print("chapter transition", event.action)
        if event.action == 'close' then
            self.isVisible = false
            for i=1,self.numChildren do
                game:removeEventListener('Message', self[i])
            end
            game:removeEventListener('Chapter', self)
            self:removeSelf()
        end
    end
    game:addEventListener('Chapter', messages)
    game:addEventListener('Chapter', debug.debug)