/* Top nav (tabs) */

#navTunnel ul{
	list-style-type: none;
}

#navTunnel ul li {
	float: left;
}

#navTunnel ul li span {
	display: none;
}

#navTunnel ul li a {
	display: block;
	height: 24px;
}

#navTunnel ul li a.navTunnelHome {
	background: url(../images/tabtunnel-home.jpg) top no-repeat;
	width: 58px;
	margin-left: 53px;
}

#navTunnel ul li a.navTunnelOpacity {
	background: url(../images/tabtunnel-opacity.jpg) top no-repeat;
	width: 154px;
	margin-left: 6px;
}

#navTunnel ul li a.navTunnelPart {
	background: url(../images/tabtunnel-particulate.jpg) top no-repeat;
	width: 184px;
	margin-left: 6px;
}

#navTunnel ul li a.navTunnelTunnel {
	background: url(../images/tabtunnel-tunnel.jpg) top no-repeat;
	width: 136px;
	margin-left: 6px;
}

#navTunnel ul li a.navTunnelContact{
	background: url(../images/tabtunnel-contact.jpg) top no-repeat;
	width: 97px;
	margin-left: 6px;
}

#navTunnel ul li a:hover {
	background-position: bottom;
}

#navTunnel ul li a.active {
	background-position: bottom !important;
}