JS不間斷向上滾動效果代碼

 不間斷向上滾動的效果，想必大家都有見到過吧，本文也為大家准備一個使用js實現的不間斷向上滾動效果，感興趣的朋友可以參考下

代碼如下: <div id=demo style=overflow:hidden;height:139;width:232;background:#f4f4f4;color:#ffffff><div id=demo1><img src="http://www.lanrentuku.com/down/js/images/12460764740.jpg"><img src="http://www.lanrentuku.com/down/js/images/12460764741.jpg"><img src="http://www.lanrentuku.com/down/js/images/12460764742.jpg"><img src="http://www.lanrentuku.com/down/js/images/12460764743.jpg"><img src="http://www.lanrentuku.com/down/js/images/12460764744.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>  <p><a href="http://www.jb51.net/jiaoben/" target="_blank">腳本之家</a></p>