#menu {
  behavior: url(csshover2.htc);
  width:900px;
  background-image:url(../img/menubar.jpg);
  float:left;
}

#menu ul {
  list-style:none;
  margin:0;
  padding:0;
  width:150px;
  float:left;
}

#menu ul ul {
  position: absolute;
  z-index: 500;
}

#menu ul ul ul {
  position: absolute;
  top: 0;
  left: 100%;
}

#menu li {
  position: relative;
}

#menu a, #menu h2 {
  font:bold 12px verdana;
  display:block;
  margin: 0px;
  padding: 3px 5px;
}

#menu h2 {
  color: #000;
  text-transform: uppercase;
  border-left-width:1px;
  border-right-width:1px;
  border-top-width:0px;
  border-bottom-width:0px;
  border-style:solid;
  border-color:#ccc #888 #555 #bbb;
}

#menu a {
  border-width:1px;
  border-style:solid;
  border-color:#ccc #888 #555 #bbb;
  color: #000;
  background: #eee;
  text-decoration: none;
}

#menu a:hover {
  color: #fff;
  background: #f00;
}

div#menu ul ul,
div#menu ul li:hover ul ul,
div#menu ul ul li:hover ul ul {
  display: none;
}

div#menu ul li:hover ul,
div#menu ul ul li:hover ul,
div#menu ul ul ul li:hover ul {
  display: block;
}

<!--[if IE]>
#menu {
font-size: 100%;
}

#menu ul li {float:left; width:100%;}
#menu ul li a {height:1%;}
<![endif]-->