一个类似屏保的小程序，从电脑屏幕的最上端不断飘下来很多雪花，雪花还会在打开的窗口如IE等等的边缘上停留、堆积，很好玩的小程序。-A small program similar to the screen saver, from the top of the computer screen constantly floating down a lot of snow, the snow will be in the open window, such as IE, and so stay on t