[转载]jquery 动态滚动

<script type="text/javascript">
       //滚动插件
       (function ($) {
           $.fn.extend({
               Scroll: function (opt, callback) {
                   //参数初始化
                   if (!opt) var opt = {};
                   var _this = this.eq(0).find("#scrollDivContent:first");
                   var lineH = _this.find(".syhybox:first").outerHeight(), //获取行高
                line = opt.line ? parseInt(opt.line, 10) : parseInt(this.height() / lineH, 10), //每次滚动的行数，默认为一屏，即父容器高度
                speed = opt.speed ? parseInt(opt.speed, 10) : 1000, //卷动速度，数值越大，速度越慢（毫秒）
                timer = opt.timer ? parseInt(opt.timer, 10) : 500; //滚动的时间间隔（毫秒）
                   if (line == 0) line = 1;
                   var upHeight = 0 - line * lineH;
                   //滚动函数
                   scrollUp = function () {
                       _this.animate({
                           marginTop: upHeight
                       }, speed, function () {
                           for (i = 1; i <= line; i++) {
                               _this.append(_this.find(".syhybox:first")[0]);
                               upHeight = 0 - _this.find(".syhybox:first").outerHeight();
                           }
                           _this.css({ marginTop: 0 });
                       });
                   }
                   //鼠标事件绑定
                   _this.hover(function () {
                       clearInterval(timerID);
                   }, function () {
                       timerID = setInterval("scrollUp()", timer);
                   }).mouseout();
               }
           })
       })(jQuery);
 
       $(document).ready(function () {
           $("#scrollDiv").Scroll({ line: 1, speed: 1000, timer: 2000 });
       });
   </script>

<div id="scrollDiv">
<div id="scrollDivContent"><%=hiddenDangerList%></div>
</div>