抽奖跑马灯

最近做了一个春节活动，里面有个抽奖活动，做一个跑马灯效果，示例如下

html代码

    

        
20云豆
        
50云豆
        
100云豆
        
抽   奖
        
已 抽 奖
        
1000云豆
        
2000云豆
        
5000云豆
        
10000云豆
        
20000云豆
    

css代码

.lottery .lottery-ul{position:relative;width:360px;height:360px;margin:0;padding:0;float:left;background:#ffeabc;}
.lottery .lottery-ul li {width:120px;height:120px;line-height:90px;color:#ff5152;;text-align:center;list-style-type: none;}
.lottery .lottery-ul li .beans{color:#ff5152;;font-size:20px;font-weight:bold;}
.lottery .lottery-ul li.lottery-unit-1{position:absolute;top:0;left:0;background:url("http://www.sinacloud.com/static/special/image/lottery_bg1.png") 0 0 no-repeat;}
.lottery .lottery-ul li.lottery-unit-2{position:absolute;top:0;left:120px;background:url("http://www.sinacloud.com/static/special/image/lottery_bg2.png") 0 0 no-repeat;}
.lottery .lottery-ul li.lottery-unit-3{position:absolute;top:0;left:240px;background:url("http://www.sinacloud.com/static/special/image/lottery_bg1.png") 0 0 no-repeat;}
.lottery .lottery-ul li.lottery-unit-4{position:absolute;top:120px;left:240px;background:url("http://www.sinacloud.com/static/special/image/lottery_bg2.png") 0 0 no-repeat;}
.lottery .lottery-ul li.lottery-unit-5{position:absolute;top:240px;left:240px;background:url("http://www.sinacloud.com/static/special/image/lottery_bg1.png") 0 0 no-repeat;}
.lottery .lottery-ul li.lottery-unit-6{position:absolute;top:240px;left:120px;background:url("http://www.sinacloud.com/static/special/image/lottery_bg2.png") 0 0 no-repeat;}
.lottery .lottery-ul li.lottery-unit-7{position:absolute;top:240px;left:0;background:url("http://www.sinacloud.com/static/special/image/lottery_bg1.png") 0 0 no-repeat;}
.lottery .lottery-ul li.lottery-unit-8{position:absolute;top:120px;left:0;background:url("http://www.sinacloud.com/static/special/image/lottery_bg2.png") 0 0 no-repeat;}
.lottery .lottery-ul li.active{
    background:url("http://www.sinacloud.com/static/special/image/lottery_bg_active.png") 0 0 no-repeat;}
.lottery .lottery-ul li.lottery-btn{position:absolute;top:120px;left:120px;width:120px;height:120px;background:#ffeabc;}
.lottery .lottery-ul li.lottery-btn a{display:inline-block;width:120px;height:120px;line-height:120px;text-align:center;font-size:30px;color:#fff;text-decoration:none;background:#fe8145;border-radius:3px;-webkit-border-radius:3px;-moz-border-radius:3px;}
.lottery .lottery-ul li.has-lottery a{padding:0;border:none;}
.hide{display:none;}

js代码