img { border: 0px; }
.bannerbox { width: 920px; height: 345px; overflow: hidden; margin: 0px auto; }
#focus { width: 920px; height: 345px; clear: both; overflow: hidden; position: relative; float: left; }
#focus ul { width: 920px; height: 345px; float: left; position: absolute; clear: both; padding: 0px; margin: 0px; }
#focus ul li { float: left; width: 920px; height: 345px; overflow: hidden; position: relative; padding: 0px; margin: 0px; }
#focus .preNext { width: 550px; height: 320px; position: absolute; top: 0px; cursor: pointer; }
#focus .pre { left: 0; background: url(http://www.027art.com/abc/MoBanImgs/yikao/2013/huashi2013/zhs2013_Imgs/sprite.png) no-repeat left center; }
#focus .next { right: 0; background: url(http://www.027art.com/abc/MoBanImgs/yikao/2013/huashi2013/zhs2013_Imgs/sprite1.png) no-repeat right center; }