flash的一些编程小技巧，源码的使用，请大家好好看看，学习。-flash of a small number of programming techniques, the use of FOSS, please good look, study.

到了 Flash 5，精确下载有了一些大的进步，我们这次可以显示下载了多少字节和需要多少时间了，而且实现方法很简单的。-to Flash 5, precision download With some major progress, this time we will show the number of bytes downloaded and the time required, but implementation is simple.