jQuery实现公告无限循环滚动

jQuery代码  转自：http://www.cnblogs.com/qianduanzu/archive/2012/05/10/2493903.html

//第二版：Newton改造
 (function (win){
     var callboarTimer;
     var callboard = $('#callboard');
     var callboardUl = callboard.find('ul');
     var callboardLi = callboard.find('li');
     var liLen = callboard.find('li').length;
     var initHeight = callboardLi.first().outerHeight(true);
 
     win.autoAnimation = function (){
         if (liLen <= 1) return;
         var self = arguments.callee;
         var callboardLiFirst = callboard.find('li').first();
         callboardLiFirst.animate({
             marginTop:-initHeight
         }, 500, function (){
             clearTimeout(callboarTimer);
             callboardLiFirst.appendTo(callboardUl).css({marginTop:0});
             callboarTimer = setTimeout(self, 5000);
         });
     }
 
     callboard.mouseenter(
         function (){
             clearTimeout(callboarTimer);
         }).mouseleave(function (){
             callboarTimer = setTimeout(win.autoAnimation, 5000);
         });
 }(window));
 setTimeout(window.autoAnimation, 5000);

HTML代码：

<div id="callboard">
<ul>
    <li>
        <a href="http://www.qianduanzu.com/2012042036.html">公告：前端组主题正在整理中..有需要用的朋友请留个言，以方便及时通知！</a>
    </li>
    <li>
        <span style="color:red;">公告：前端组上线一个月零八天，PR升为3，BD权重1</span>
    </li>
</ul>

CSS代码：(可根据需求另设)

#callboard { height:24px; line-height:24px; overflow:hidden;}
#callboard ul { padding:0;}
#callboard li { padding:0;