img { border: 0px; }

.bannerbox { width: 1000px; height: 393px;position:relative; overflow: hidden; margin: 0px auto; }

.bannerbox .focus {position:relative; height:100%; z-index:0; } 

.bannerbox .focus   li { zoom:1; vertical-align:middle; }

.bannerbox .focus   img{width: 1000px; height: 393px;display:block;}