转载：关于clientHeight、offsetHeight、scrollHeight
http://hi.baidu.com/lihuiran/blog/item/859de819530aca7fdab4bd81.html关于clientHeight、offsetHeight、scrollHeightwindow.screen.availWidth 返回当前屏幕宽度(空白空间) window.screen.availHeight 返回当前屏幕高...
