#menu {
  position: relative; 
  clear: both;
  width: 600px; 
  height: 24px; 
  z-index: 100;
}

#menu ul li a, #menu ul li a:visited, #menu ul li a:active, #menu ul li a:focus {
  display: block;
  font: normal 13px verdana, arial, sans-serif;
  text-decoration: none;
  padding: 0 12px; 
  height: 24px; 
  color: #9ac00b;
  background: #fff;
  border: 0;
  margin: 0; 
  line-height:  24px; 
  overflow: hidden;
}

#menu ul li a.active { 
  color: #fff;
  background: #9ac00b;
}

#menu ul {
  padding: 0; 
  margin: 0;
  list-style: none;
}

#menu ul li {
  float: left; 
  position: relative;
}

#menu ul li ul {
  display: none;
  background: #fff;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=90)";
  filter: alpha(opacity=90);
  opacity: .9;
}

#menu ul li:hover a {
  color: #fff; 
  background: #9ac00b;
  border: 0;
}

#menu ul li:hover ul {
  display: block; 
  position: absolute; 
  top: 24px; 
  left: 0; 
  width: 144px;
}

#menu ul li:hover ul li a {
  display: block; 
  background: #fff;
  width: 120px; 
  color: #555;
}

#menu ul li:hover ul li a:hover {
  background: #555; 
  color: #fff;
}