#nav {
	width: 840px;
	height: 39px;
	margin: 0px auto;
	padding: 0px;
	position: relative;
	/*background: url(../images/nav-bg.jpg) top center no-repeat;*/
}
#nav li {
	margin: 0px 0px 0px 0px;
	padding: 0px;
	list-style: none;
	height: 39px;
	top: 0px;
	width:168px;
	float:left;
}
#nav a {
	display: block;
	color: #fff;
	padding: 0px;
	font-size: 14px;
	text-align: center;
	text-decoration: none;
	line-height: 39px;
	font-weight:bold;
}
#nav li a:hover {color: #000; background: url(../images/nav-roll.jpg) top center no-repeat}