HTML部分：

     
     
    
      
        
       
111111111111
        
       
222222222222
        
       
333333333333
        
       
444444444444
        
       
555555555555
        
       
666666666666
        
       
777777777777
        
       
888888888888
        
       
999999999999
    
      
    
      
     

CSS部分：

#box{
              height:240px;        width:300px;        margin:0 auto;        border:1px solid #0066FF;        overflow:hidden;        padding-bottom:20px;   }   #box li{
              color:#333;        padding:5px 0;   }    #box ul{
              margin:0;        padding:0;   }

JS部分：

var area=document.getElementById("box");var con1=document.getElementById("con1");var con2=document.getElementById("con2");con2.innerHTML=con1.innerHTML;function scrollUp(){    if(area.scrollTop>=con1.offsetHeight){        area.scrollTop=0;    }else{        area.scrollTop++;    }}var time=50;myscroll=setInterval("scrollUp()",time);area.onmouseover=function (){    clearInterval(myscroll);}area.onmouseout=function (){    myscroll=setInterval("scrollUp()",time);}