Text based on jquery runs upwards like a marquee effect_jquery

<div class="recordList"> 
<ul class="tpl-rotate-recordList" style="margin-top: 0px;"> 
<li class="tpl-rotate-recordList-item"> 
恭喜187****5204获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜137****1372获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜156****0276获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜139****9856获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜136****0580获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜136****0580获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜138****8118获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜136****5555获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜136****0580获得1000RBM 
</li> 
<li class="tpl-rotate-recordList-item"> 
恭喜136****0580获得1000RBM 
</li> 
</ul> 
</div>

/*自动轮换xuyw*/ 
var AutoScroll = function(a) { 
$(a).find("ul:first").animate( { 
marginTop : "-20px" 
}, 500, function() { 
$(this).css( { 
marginTop : "0px" 
}).find("li:first").appendTo(this) 
}) 
} 
if ($(".recordList ul li").length > 0) { 
setInterval('AutoScroll(".recordList")', 2000) 
} else { 
$(".recordList").hide() 
}