学习技巧：JS不间断向上滚动教程

<div id=demo style=overflow:hidden;height:300;width:600;background:#f4f4f4;color:#ffffff><div id=demo1> <img src="http://www.geekg.com/files/images4/4ac549b487174c2187890ef219f7b5d1.jpg"> <img src="http://www.geekg.com/files/images3/9cab1a35cedd92bc813e9eb0723e7ba7.jpg"> <img src="http://www.geekg.com/files/images8/20070722014853U.jpg"> <img src="http://www.geekg.com/files/images6/fa68db6b781d648952b8e8b5d1bef9d4.jpg"> <img src="http://www.geekg.com/files/images5/043c230adf9e2123e03c680d89bf426c.jpg"> </div> <div id=demo2></div> </div> <script> var speed=50 demo2.innerHTML=demo1.innerHTML function Marquee(){ if(demo2.offsetTop-demo.scrollTop<=0) demo.scrollTop-=demo1.offsetHeight else{ demo.scrollTop++ } } var MyMar=setInterval(Marquee,speed) demo.onmouseover=function() {clearInterval(MyMar)} demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)} </script> 
      提示:CTRL+A全部复制再运行，您也可以先修改部分代码再运行，复制代码功能在Firefox下无效