ul#top_nav { /* all lists */
}

ul#top_nav li ul { /* second-level lists */
	display: none;
	list-style:none;
	padding:1px;
	background-color:#ff0;
	margin:0;
	border-collapse:collapse;
	position:absolute;
	z-index:100;
}

ul#top_nav li#t_co ul {
	margin-left:-25px;
	width:11em;
}
ul#top_nav li#t_vin ul {
	width:13em;
}

ul#top_nav li>ul { /* to override top and left in browsers other than IE, which will position to the top right of the containing li, rather than bottom left */
}

ul#top_nav li:hover ul, ul#top_nav li.over ul { /* lists nested under hovered list items */
	display: block;
	z-index: 100;
}
#top_nav li ul li {
	float:none;
	display:block;
	margin:0;
	height:2em;
	border:1px solid #010080;
}
#top_nav li ul li a {
	background:#ff0;
	height:1em;
	padding:.5em;
	margin:0;
	color:#000080;
}
#top_nav li ul li a:hover {
	background:#f60;
	color:#000;
}