on (rollOver) { gotoAndPlay(2); } on (releaseOutside,rollOut) { gotoAndPlay(20-_currentframe); } o
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on(rollOver){gotoAndPlay(2);}on(releaseOutside,rollOut){gotoAndPlay(20-_currentframe);}oon(rollOver)
on (rollOver) { gotoAndPlay(2); } on (releaseOutside,rollOut) { gotoAndPlay(20-_currentframe); } o
on (rollOver) { gotoAndPlay(2); } on (releaseOutside,rollOut) { gotoAndPlay(20-_currentframe); } o
on (rollOver) { gotoAndPlay(2); } on (releaseOutside,rollOut) { gotoAndPlay(20-_currentframe); } o
当鼠标从当前mc上划过（rollOver）时候,跳到当前影片剪辑（mc）的第2桢,
当鼠标在此mc外释放或者划出此mc范围时,跳到（20-当前桢）得到的那个桢数那里