html *{padding:0;margin:0;}
.nav *{text-decoration:none;}
.nav * a:hover{background-color:#176482;color:#ffffff;/* 鼠标经过时的红色背景，可自定义 */}
.menu{list-style:none;height:40px;width:800px;;z-index:10000;}
.nav{list-style:none;height:40px;width:800px;margin:0 auto;background-color:#fff;}
.nav li{width:100px;float:left;border-left:1px solid #fff;border-right:1px solid #fff;border-top:1px solid #fff;border-bottom:1px solid #fff;position:relative;z-index:10000;}
.nav li a{color:#333;height:38px;line-height:38px;padding:0 20px;blr:expression(this.onFocus=this.close());blr:expression(this.onFocus=this.blur());display:inline-block;}
.nav li a:focus{-moz-outline-style: none; }
.nav li .sub-nav{position:absolute;top:39px;left:-1px;list-style:none;background-color:#fff;display:none;}
.nav li .sub-nav li{text-align:center;clear:left;width:140px;height:35px;line-height:35px;position:relative;}
.nav li .sub-nav li a{height:34px;line-height:34px;width:138px;padding:0;display:inline-block;}
.nav li .sub-nav li a:hover{height:34px;line-height:34px;width:138px;padding:0;display:inline-block;background-color:#176482;color:#fff;}