ul {list-style: none; margin:0px; padding:0px;}
.hidden{display:none;}

#banner{position:relative;width:100%; height:auto; max-height:700px;border-top: 0px solid #142000;}
#banner .img_list{position:relative; z-index:200;}
#banner .img_list img{width:100%;height:auto;  max-height:700px;}
#banner .btn_list{position:absolute; margin:0 auto; bottom:10px; left:50%;z-index:300;}
#banner .btn_list li{float:left; margin-right:7px;}