.screen{
    width:100%;
    height:347px;
    overflow:hidden; 
    position:relative;
}
.screen li{ width:100%; height:347px; overflow:hidden; float:left;}
.screen ul{ position:absolute; left:0; top:0px; width:8000px;}
.all ol{ position:absolute; right:10px; bottom:10px; line-height:20px; text-align:center;}
.all ol li{ float:left; width:20px; height:20px; background:#fff; border:1px solid #ccc; margin-left:10px; cursor:pointer;}
.all ol li.current{ background:yellow;}
#arr img{ width:23px; height:46px; position:absolute; left:30px; top:50%; margin-top:-11px; cursor:pointer;}
#arr #right{right:30px; left:auto;}