ul#topnav {
	margin: 0; padding: 0;
	float:left;
	width: 100%;
	list-style: none;
	font-size: 1.1em;
	z-index:999;
}
ul#topnav li {
	float: left;
	margin: 0;  
	padding: 0 0 0 8px;
	position: relative; 	
	z-index:999;
}
ul#topnav .advert li 
{
    padding:0;
}
ul#topnav .advert 
{
    position:relative;
    right:10px;
}
ul#topnav li a {
	float: left;
	text-indent: -9999px; 
	height: 48px;
}
ul#topnav li:hover a, ul#topnav li a:hover { background-position: left bottom; } /*--Hover State--*/
ul#topnav a.home {
	background: url(/images/mega/dark/nav_home.png) no-repeat;
	width: 38px;
}
ul#topnav a.about {
	background: url(/images/mega/dark/nav_about.png) no-repeat;
	width: 58px;
}
ul#topnav a.products {
	background: url(/images/mega/dark/nav_products.png) no-repeat;
	width: 90px;
}
ul#topnav a.solutions {
	background: url(/images/mega/dark/nav_solutions.png) no-repeat;
	width: 81px;
}
ul#topnav a.science {
	background: url(/images/mega/dark/nav_science.png) no-repeat;
	width: 157px;
}
ul#topnav a.news {
	background: url(/images/mega/dark/nav_news.png) no-repeat;
	width: 41px;
}
ul#topnav a.casestudies {
	background: url(/images/mega/dark/nav_casestudies.png) no-repeat;
	width: 76px;
}
ul#topnav a.contact {
	background: url(/images/mega/dark/nav_contact.png) no-repeat;
	width: 47px;
}
/* sub nav styles */
ul#topnav li .sub {
	position: absolute;
	top: 41px; 
	left:8px;
	padding: 20px 20px 20px;
	float: left;
	display: none;
	width: 406px;
	height:403px;
}
ul#topnav li .row { 
	clear: both;
	float: left;
	width: 400px;
	margin-bottom: 10px;
}
ul#topnav .sub
{
    background-image:url(/images/mega/bkgrd.png);
	background-repeat:no-repeat;	
	z-index:999;
}
ul#topnav .sub .subcontainer 
{
    width:375px;
    height:70px;
}
ul#topnav .sub .image 
{
    width:75px;
    height:57px;
    float:left;
}
ul#topnav .sub .ulcontainer 
{
    width:225px;
    float:left;
}
ul#topnav li .sub ul{
	list-style: none;
	margin: 0; 
	padding: 0;
	width: 275px;
	clear:both;
}
ul#topnav .sub ul li {
	width: 275px; /*--Override parent list item--*/
	clear:both;
	color: #fff;
	float:left;
}
ul#topnav .sub ul li h2 { /*--Sub nav heading style--*/
	padding: 0;  
	margin: 0;
	font-size: 2.0em;
	font-weight: normal;
	letter-spacing:-0.05em;
}
ul#topnav .sub ul li h2 a:hover {
	color:#000;
}
ul#topnav .sub ul li h2 a { /*--Sub nav heading link style--*/
	padding: 0;
	background-image: none;
	color: #9a4b9d;
}
ul#topnav .sub ul li a {
	float: none;
	text-indent: 0; /*--Override text-indent from parent list item--*/
	height: auto; /*--Override height from parent list item--*/
	padding: 0;
	display: block;
	text-decoration: none;
	color: #000;
	font-size: 1.7em;
}
ul#topnav .sub ul li a:hover {
	background-position: 5px 13px ;/*--Override background position--*/
}