.js{width:1440px;height:571px;margin:0 auto; position:absolute; left:50%; margin-left:-720px;}
.js2{position:relative;width:600px;height:400px; float:left;}
.prevBtn{background:url(jsNav.png) no-repeat;}
.nextBtn{background:url(jsNav.png) no-repeat;}
.imgSelected{background:url(jsNav.png) no-repeat;}
.jsNav{position:absolute;width:auto;bottom:10px;font-family:Arial, Helvetica, sans-serif;height:30px; right:10px; font-weight:bold; background-color:#f6f6f6;}
.jsNav a{text-align:center;line-height:30px;width:25px;float:left;vertical-align:middle;}
.prevBtn{display:block;background-position:0px -30px;height:30px}
.nextBtn{display:block;background-position:-100px -30px;height:30px}
.imgSelected{background-position:1px -60px;color:#000}