可以随意控制IE滚动条上下滚动多少像素，获取滚动条的位置，因为IE用GetScrollPos是获取不到，所以写了这个程式，对于想控制浏览器上下滚动操作的绝对有帮助。,Free to control how many pixels IE scroll bar to scroll up and down to get the position of the scroll bar because IE GetScrollPos is captured, so write this program absolutely helpful for those who want to control the operation of the browser to scroll up and down.