#menu ul {
  margin: 0;
  padding: 0 5px;
  list-style: none;
}
#menu ul li {
  display: block;
  float: left;
  margin: 0;
  padding: 0;
}
#menu li ul { display: none; }
#menu ul li a {
  display: block;
  text-decoration: none;
  color: #ffffff;
  padding: 5px 15px 6px 15px;
  background:transparent url(images/nav_bg.png) repeat-x top left;
}
#menu ul li a:hover { background:transparent url(images/nav_bg.png) 0px -30px no-repeat; }
#menu li:hover ul {
  display: block;
  position: absolute;
}
#menu li:hover li {
  float: none;
}
#menu li:hover a { background: transparent url(images/nav_bg.png) repeat-x top left; }
#menu li:hover li a:hover { background: #000099; }