仿猪八戒网左下角的文字滚动效果

源码：

css:

*{padding:0;margin:0;font-size:12px;} 
.do_ta { border: 1px solid #E4E4E4; margin:10px auto; width:170px; } 
.do_ta .ta_ta { background: url("http://s.zbjimg.com/p/zbj/css/../img/tafb.gif") no-repeat; height: 52px; width: 168px; } 
.do_ta .ta_tc { height: 61px; line-height: 20px; margin: 10px; overflow: hidden; padding: 0;position:relative; } 
.do_ta .ta_tc li { border-bottom: 1px dashed #E4E4E4; color: #666666; height: 60px; margin: 0; overflow: hidden; padding: 0;position:absolute;top:0;left:0;background:#fff;z-index:0;width:155px; } 
.do_ta .ta_tc li .time { color: #999999; } 
.do_ta .ta_tc li u { color: #2B9A00; text-decoration:none;} 
.do_ta .ta_tc li s { color: #FF3600; text-decoration:none;} 
.do_ta .ta_tc li a { color: #1A69DE;text-decoration:none; } 
.do_ta .dota_d { padding: 5px 0 15px; text-align: center; } 
.do_ta .dota_d a{color:#666;}

javascript:

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Meng.extend({ 
zbjScrollText:function(scrollId){ 
var li = Meng.getTag('li',Meng.getId(scrollId)), curActLi = 0, 
getActivity = function(){ 
return [li[curActLi],li[10+curActLi],li[20+curActLi],li[30+curActLi]]; 
}, 
sliceDown = function(elem,pos){ 
Meng.setStyle(elem,{top:'-60px',zIndex:1}); 
Meng.animate(elem,{top:-60},{top:60},800); 
}, 
play = function(){ 
Meng.each(getActivity(),function(i){ 
var _this = this; 
setTimeout(function(){ 
sliceDown(_this,i); 
},i*900); 
}); 
}; 
play(); 
setInterval(function(){ 
if(curActLi == 9){ 
curActLi = 0; 
Meng.each(li,function(){Meng.setStyle(this,{zIndex:0})}); 
}else curActLi++; 
play(); 
},5000); 
} 
}); 
Meng.zbjScrollText('dota1');