图片文字上下滚动js

<script type="text/javascript">


var speed=60;
  link_logo2.innerHTML= link_logo1.innerHTML
    function Marquee2(){
   
      if( link_logo2.offsetTop-link_logo.scrollTop<=0){ 
      
         link_logo.scrollTop-=link_logo1.offsetHeight;;
       
         }
           else { link_logo.scrollTop+=1; 
           
     }
     }
  var MyMar2=setInterval(Marquee2,speed)
 link_logo.onmouseover=function() {clearInterval(MyMar2)}
 link_logo.onmouseout=function() {MyMar2=setInterval(Marquee2,speed)}
</script>

js代码要放在body里，显示块后面

 <table width="100%" border="0" cellspacing="5" cellpadding="0">
                              <tr>
                                <td  align="center">   <div id="link_logo" style=" overflow: hidden; width: 100%;  height: 293px">
                                 <div id="link_logo1" style="overflow: hidden;">
                                <asp:DataList ID="cplist" runat="server" RepeatColumns="2">
                                
                                <ItemTemplate>
                                <table width="120" height="120" border="0" cellpadding="1" cellspacing="1" bgcolor="#dddddd">
                                  <tr>
                                    <td bgcolor="#FFFFFF" valign="middle" align="center"><a target="_blank" href="http://nbrands.reworlds.com/<%#Eval("enname")%>/gallery/?cid=<%#Eval("cid") %>&pid=<%#Eval("id") %>"> <img src="productImg/<%#Eval("imgurl") %>" border="0" onload="DrawImage(this,118,118)" width="118" height="118"></a></td>
                                  </tr>
                                </table>
                                  <table width="120" border="0" cellspacing="0" cellpadding="2">
                                    <tr>
                                      <td align="center" class="hei12"><a href="http://nbrands.reworlds.com/<%#Eval("enname")%>/gallery/?cid=<%#Eval("cid") %>&pid=<%#Eval("id") %>"><%#Eval("name") %></a></td>
                                    </tr>
                                  </table>
                                  </ItemTemplate>
                                 
                                      </asp:DataList> 
                                  </div>
                                  <div id="link_logo2"></div></div>
                                  </td>
                            
                              </tr>
                            </table>