.nav, .nav ul { padding: 0; margin: 0; list-style: none; }
.nav a { display: block; width: 7em;text-align:center; }
.nav li { float: left; width: 7em; font-weight: bold; }
.nav li ul { position: absolute; width: 7em; left: -999em; border: solid 1px #4f4f4f; background-color: #fff; padding: .2em; }
.nav li ul li a:hover { color: #000; }
.nav li:hover ul, .nav li.sfhover ul { left: auto; }
.nav li.sfout ul { left: -999em; }