ul#nav {
	margin:auto;
}
ul#nav li{
	list-style:none;
	float:left;
}
ul#nav li a{
	display:block;
	width:150px;
	margin:3px;
	padding:3px;
	background-color:#FFF;
	border:1px solid #000000;
	color:#000;
	font-weight:bold;
	text-align:center;
}