介绍：
Actuate is faster than TweenLite and it is free for all your Flash projects. Power through your everyday needs using no-nonsense,
lightweight tweens, then extend when you need more....
使用示例：
Actuate.tween (target, 1, { alpha: 0 }, false).delay (1).onComplete(func,...args).onUpdate (trace,"Tween updated").ease(缓动类型).;
详见：google文档说明以及类库下载