.bg_banner {position:relative; float: left; width: 100%; height: 330px; background: repeat-x; }
.slide_bg{ width:100%; position:absolute; left:0; top:0; height:330px; z-index:1;}
.slide_bg li{ position: absolute; left: 0; top: 0; z-index: 0; width:100%; height: 330px; display:none; background-repeat:repeat-x;}
.slide_bg li.bg_current{ z-index:1; display:block;}
.banner { position: absolute; left: 50%; top: 0;margin-left:-395px; z-index: 10; float: left; width:670px; overflow: visible; }
.banner_menu { position: absolute; z-index:10;float: left; display: inline; width: 230px; height: 330px; overflow-x: visible; position:absolute; left:50%; margin-left:-625px;}
.shadow_bg{ width:100%; height:330px; position:absolute; left:0; top:0; z-index:3;}
.shadow_bg .left{ width:100px; height:330px; background: url(shadow_left.png) no-repeat left top; float:left;}
.shadow_bg .right{ width:100px; height:330px; background: url(shadow_right.png) no-repeat right top; float:left;}
.shadow_bg .con{  height:330px;float:left;background: url(shadow_con.png) repeat-x;}
.slide_show {  float: left; width: 100%; height: 330px; }
.slide_show .img_wrapper { float: left; width: 100%; height: 330px; overflow: hidden; }
.slide_show .img_wrapper a { display: none; width: 670px; height: 330px; position:absolute; left:0; }
.slide_show .img_wrapper a.img_current { z-index: 1; display: block; }
.express { float: right; width: 290px; height: 330px; z-index:6;position:absolute; right:50%; margin-right:-565px;}
.constricted .banner_menu { position: absolute; margin-left:-500px; display: none; }
.constricted .slide_show { margin-left: 0px; display: inline; }
.constricted .slide_show .img_wrapper a{margin-left:0px;}
.constricted .slide_trigger{ margin-left:13px;}
.constricted .express{ margin-right:-505px;}
.constricted .banner{ margin-left:-455px;}