#jswbox{width:1200px; margin:20px auto;}
#jswbox ul{position:relative;height:320px;}
#jswbox li{position:absolute;width:0;height:0;z-index:0;cursor:pointer;overflow:hidden;  left:10px;}
#jswbox li img{width:100%;height:100%;vertical-align:top; float:left; border:0;}
#jswbox .prev, #jswbox .next{ display:none;}