local imgBg = display.newSprite("666666.jpg")        :pos(display.cx, display.cy)        :addTo(self)            local move1 = cc.MoveBy:create(0.5, cc.p(0, 10))    local move2 = cc.MoveBy:create(0.5, cc.p(0, -10))    local SequenceAction = cc.Sequence:create( move1, move2 )    transition.execute(imgBg, cc.RepeatForever:create( SequenceAction ))