/* CSS Document */
.mainnb{ width:100%; height:300px;overflow:hidden; position:relative;}
.mainnb_window{left:50%;width:1920px;height:300px;overflow:hidden;margin-left:-960px;position:absolute;}
.mainnb_window ul{width:999999px;height:300px;position:relative;text-decoration:none;}
.mainnb_window li{ background:#fff;width:1920px;height:300px;text-align:center;font-size:0px;float:left;display:inline;text-decoration:none;}