/* CSS Document */

#menu {
width: 576px;
background: #eee;
float: static;
}

#menu ul {
list-style: none;
margin: 0;
padding: 0;
width: 12em;
float: left;
}

#menu a, #menu h2 {
	display: block;
	border-width: 1px;
	border-style: solid;
	border-color: #ccc #888 #555 #bbb;
	margin: 0;
	padding: 2px 3px;
	font-family: arial, helvetica, sans-serif;
	font-size: 14px;
	line-height: 16px;
	font-weight: bold;
}

#menu h2 {
	color: #fff;
	text-transform: uppercase;
	background-color: #0000FF;
	text-align: center;
	font-size: 14px;
}

#menu a {
color: #000;
background: #efefef;
text-decoration: none;
}

#menu a:hover {
color: #a00;
background: #fff;
}

#menu li {
	position: static;
	background-color: #0000FF;
}

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

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

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;}

<style type="text/css" media="screen">
body {
behavior: url("../usf/csshover.htc"); /* call hover behaviour file */
font-size: 100%; /* enable IE to resize em fonts */
} 
#menu ul li {
float: left; /* cure IE5.x "whitespace in lists" problem */
width: 100%;
}
#menu ul li a {
height: 1%; /* make links honour display: block; properly */
} 

#menu a, #menu h2 {
font: bold 0.7em/1.4em arial, helvetica, sans-serif; 
/* if required use em's for IE as it won't resize pixels */
} 
</style>


body {
behavior: url("../usf/csshover.htc");
}


<style type="text/css" media="screen">
body {
behavior: url("../usf/csshover.htc");
font-size: 100%;
}

#menu ul li {float: left; width: 100%;}
#menu ul li a {height: 1%;} 

#menu a, #menu h2 {
font: bold 0.7em/1.4em arial, helvetica, sans-serif;
}
</style>