说明：  用flash做的倒计时器，界面漂亮，适合辩论赛等需要计时的场合用，包含fla和swf文件，通过修改fla可以实现修改时间。
(Countdown to do with the flash device, the interface beautiful, suitable for debating competitions that require time to use the occasion, including fla, and swf files, fla can be achieved by modifying the modification time.)