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