<div id="scrollNews">
         <% for (int i = 0; i < dt.Rows.Count; i++) %>
         <%{ %>
            <div class="news"><a target="_blank" href='newshow.aspx?uid=<%=dt.Rows[i]["_id"].ToString()%>'><%=dt.Rows[i]["_title"].ToString()%></a><br /></div>
          <%} %>
        </div>
       </div> 

 public DataTable dt;
 protected void Page_Load(object sender, EventArgs e)
    {
        string sql = "select top 9 * from news  ";
        dt = DBhelpSQL.Query(sql).Tables[0];
    }

$(function() {
    var newsTimer
    var len = $("#scrollNews .news a").height; /*a的总高度*/
    var index = 0;
    $("#scrollNews").hover(function() {
        clearInterval(newsTimer);
    }, function() {
        newsTimer = setInterval(function() {
            scrollNews(index);
            index++;
            if (index == len) { index = 0; } /*如果索引等于a的总高度，就为0*/
        }, 5000);
    }).trigger("mouseleave");/*触发上面的函数*/
});
function scrollNews(index) {
    var lineheight = $("#scrollNews .news a:first").height(); /*得到第一个a的高度*/
    $(".news").animate({ "marginTop": -lineheight * index + "px" }, 3000);/*滚动动画*/
}

List+="<a href='newshow.aspx?uid="+dt.Rows[i]["_id"]+"'> "+dt.Rows[i]["_title"]+" </a>";

------解决方案--------------------
C# code

List+="<a href='newshow.aspx?uid="+dt.Rows[i]["_id"]+"'> "+dt.Rows[i]["_title"]+" </a> <br/>";

------解决方案--------------------
直接使用repeater绑定div,li,ul
实现滚动
控制高度和相关位置

------解决方案--------------------
应该是样式的问题
不妨采取楼上的方法 用控件显示  应该是没有问题的

------解决方案--------------------

<script>  
   var marqueeContent = new Array();  
   marqueeContent[0]='';
   var marqueeInterval = new Array(); 
   var marqueeId = 0;
   var marqueeDelay = 4000;
   var marqueeHeight = 15;
   function initMarquee() {
       var str = marqueeContent[0];
       document.write('<div id=marqueeBox style="overflow:hidden;height:' + marqueeHeight + 'px" onmouseover="clearInterval(marqueeInterval[0])" onmouseout="marqueeInterval[0]=setInterval(\'startMarquee()\',marqueeDelay)"><div>' + str + '</div></div>');
       marqueeId++;
       marqueeInterval[0] = setInterval("startMarquee()", marqueeDelay);
   }
   function startMarquee() {
       var str = marqueeContent[marqueeId];
       marqueeId++;
       if (marqueeId >= marqueeContent.length) marqueeId = 0;
       if (marqueeBox.childNodes.length == 1) {
           var nextLine = document.createElement('DIV');
           nextLine.innerHTML = str;
           marqueeBox.appendChild(nextLine);
       }
       else {
           marqueeBox.childNodes[0].innerHTML = str;