style.css

.nav-container{ background: url('images/nav_bg.jpg') repeat-x 0 0;}
    .f-nav{ z-index: 9999; position: fixed; left: 0; top: 0; width: 100%;} /* isso vai fazer o menu ficar fixo no topo */
    
.nav { height: 42px;}
    .nav ul { list-style: none; }
    .nav ul li{float: left; margin-top: 6px; padding: 6px; border-right: 1px solid #ACACAC;}
    .nav ul li:first-child{ padding-left: 0;}
    .nav ul li a { }
    .nav ul li a:hover{ text-decoration: underline;}