div, ul, li { margin: 0; padding: 0; border: 0; }
ul, li { list-style-type: none; text-transform: capitalize; }
.nav { font-size: 12px; width: 1000px; margin: 0 auto 10px; height: 44px; line-height: 44px; position: relative; z-index: 999 }
    .nav a { text-decoration: none; }
.navmain { height: 44px; position: relative;}
#nav_all { height: 44px; float: left; line-height: 44px; position: relative; z-index: 222; background:url(../images/line.gif) no-repeat left center}
    #nav_all li { text-align: center; float: left; background:url(../images/line.gif) no-repeat right center; }
        #nav_all li a { color: #333; display: inline-block; font-size: 14px; font-family:"微软雅黑", "黑体"; font-weight: bold; cursor: pointer; padding: 0 17px; height: 44px; line-height: 44px; white-space: nowrap; }
            #nav_all li a:hover { background: url(../images/bird.png) center 33px no-repeat; height: 40px; line-height: 40px; border-top: 4px solid #0071b6; overflow: hidden; }
        #nav_all li ul { display: none; position: absolute; z-index: 99; width: 1000px; left: -6px; top: 43px; }
    #nav_all ul li { background-image: none; line-height: 35px; height: 35px; padding-top: 0px; padding: 0; }
        #nav_all ul li a { background-image: none; padding: 0px 10px; margin: 0px; height: 35px; line-height: 35px; color: #fff; font-family:"微软雅黑", "黑体"; font-weight: normal; background: #0071b6; border: none; }
            #nav_all ul li a:hover { background-image: none; padding: 0px 10px; margin: 0px auto; height: 35px; line-height: 35px; color: #FFF; background: #0071b6; border-top: none; }