向上滚动

<script type="text/javascript">// <![CDATA[
<span id="mce_marker" data-mce-type="bookmark"></span><span id="__caret">_</span>// <![CDATA[
(function($){
    $.fn.scroll = function(options) {
        var settings = {
            lines: 2,
            delay: 2000    
        }
        
        if (options) {
            $.extend(settings,options);
        }
        
        var lines = settings.lines,
            delay = settings.delay;        
        return this.each(function() {
            var $self = $(this),
                $ul = $self.find('ul:first'),
                iNum = $ul.find('li').length, //广告条数
                iLH = $ul.find('li:first').height(), //每行广告的高度
                speed = 600, //动画执行时间
                timer = null; 
                
            //重置ul的高度
            $ul.height(iLH * iNum);
            
            //向上滚动函数
            var scrollUp = function() {
                $ul.stop(true,true).animate({top: iLH * lines * -1},speed,function() {
                    var _$this = $(this);
                    for (var i = 0; i < lines; i++) {
                        _$this.find('li:first').appendTo(_$this);
                    }
                    _$this.css({top:0});
                })
            }
                
           $self.hover(
               function() {
                   clearInterval(timer);
               },
               function() {
                   timer = setInterval(scrollUp,delay);
               }
           ) 
               
            timer = setInterval(scrollUp,delay);   
        })    
    }
})(jQuery)
// ]]></script>
<script type="text/javascript">// <![CDATA[
             $(function(){ $('.all_recom').scroll({delay:5000,lines:5});  })
// ]]></script>
<div style="height: 144px; background: #fff; padding-top: 20px;">
<div class="all_recom" style="position: relative; overflow: hidden; width: 201px; padding: 0 74px; height: 125px;">
<ul class="act_bd" style="position: absolute; top: 0; left: 0; margin: 0;">
<li>ssss</li>
<li>ssss</li>
<li>ssss</li>
<li>ssss</li>
</ul>
</div>
</div>