.banner{margin:0px auto 0;width:540px;overflow:hidden;}
.large_box{margin-bottom:10px;width:540px;border-radius:4px;height:405px;overflow:hidden;}
.large_box img{display:block;}
.small_box{width:540px;height:90px;overflow:hidden;}
.small_list{position:relative;float:left;width:480px;height:90px;overflow:hidden;}
.small_list ul{height:90px;overflow:hidden;}
.small_list ul li{position:relative;float:left;margin-right:10px;width:110px;overflow:hidden;border-radius:4px;}
.small_list ul li img{display:block;}
.small_list ul li .bun_bg{display:none;position:absolute;top:0;left:0;width:110px;border-radius:4px;height:90px;border:2px solid #906bc8;}
.small_list ul li .small_mask {position:absolute;top:0;left:0;width:110px;border-radius:4px;height:90px;background:#000;filter:alpha(opacity=40);-moz-opacity:0.4;-khtml-opacity:0.4;opacity:0.4;}
.small_list ul li.on .bun_bg{display:block;}
.small_list ul li.on .small_mask{display:none;}
.btn{display:block;width:20px;height:90px;background-color:#f0f0f0;background-repeat:no-repeat;background-position:center center;cursor:pointer;}
.left_btn{float:left;margin-right:10px;}
.left_btn i {display: inline-block;width:14px;height:14px;background-image:url(/uploads/image/sidetail/detail_icon.png);background-position:-4px -23px;margin-top:37px;margin-left:3px;}
.left_btn:hover i {background-position:-4px -6px;}
.right_btn{float:right;}
.right_btn i {display: inline-block;width:14px;height:14px;background-image:url(/uploads/image/sidetail/detail_icon.png);background-position:-16px -23px;margin-top:37px;margin-left:3px;}
.right_btn:hover i {background-position:-16px -6px;}