说明：  制作网页时可以吧这段代码放入body中，会是你的鼠标后面加一个时钟，显示当时的系统时间，鼠标移动时，时钟也会跟着变形,非常好看！！！
(Create web pages can be bar code into the body, there would be your mouse back plus a clock, showing that the system time, the mouse moves, the clock will be followed by deformation, very good-looking! ! !)