ul { 
	padding: 0;
	margin: 0;
	list-style: none;
	background-color:#FFFFFF;
	width:300px;
}

li { 
	float: left;
	position: relative;
	width:300px;
	text-decoration:underline;
}

li ul { 
	display: none;
	position: absolute;
	top: 1em;
	left: 0;
	background-color:#FFFFFF;
	width:300px;
}

li>ul { 
	top: auto;
	left: auto;
}

li:hover ul, li.over ul { 
	display: block;
}

#content {
	clear: left;
}