javascript 文字滚动

1.向上滚动

<div id="ntice" style="overflow:hidden;275px; height :196px; margin-top:4px;">
     <div id="ntice1" >
       <ul>
                     <li>内容</li>
                      
       </ul>
       </div>
     <div  id="ntice2"></div> 
    </div>

<script language="javascript" type ="text/javascript"> 
var speed=50
ntice2.innerHTML=ntice1.innerHTML 
function Marquee(){ 
if(ntice2.offsetTop-ntice.scrollTop<=0) 
ntice.scrollTop-=ntice1.offsetHeight 
else{ 
ntice.scrollTop++ 
} 
} 
var MyMar=setInterval(Marquee,speed) 
ntice.onmouseover=function() {clearInterval(MyMar)} 
ntice.onmouseout=function() {MyMar=setInterval(Marquee,speed)} 
</script>

2.左滚动

<div  id="demo" style="overflow:hidden;850px;height:100px;">
     <table>
        <tr>
            <td id="demo1">
               <table >
               <tr>
                  <td>滚动内容</td>
              <tr>
            </table>
            
            </td>
         
            <td id="demo2"></td>
            
        </tr>
     </table>
  </div>

<script   language="JavaScript" type="text/javascript">
             var speed=30
             demo2.innerHTML=demo1.innerHTML
             function Marquee(){
             if(demo2.offsetWidth-demo.scrollLeft<=0)
             demo.scrollLeft-=demo1.offsetWidth
             else{
             demo.scrollLeft++
             }
             }
             var MyMar=setInterval(Marquee,speed)
             demo.onmouseover=function() {clearInterval(MyMar)}
             demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
</script>