.nav {
	list-style:none;
position: absolute;
	width: 100%;
	height: 55px;
	margin: 0 auto;
}
.nav li {
	width: 108px;
	float: left;
	text-align: center;
	z-index: 11
}
.nav li a {
	display: block;
	width: 108px;
	height: 55px;
	font: 16px/55px 'microsoft yahei',Verdana, Arial;
	color: #fff;
	text-overflow: ellipsis;
	overflow: hidden;
	white-space: nowrap;
}
.nav li dl {
	left: 0;
	top: 55px;
	background: url(../images/navbg.png) 0 0 repeat;
	z-index: 22;
	display: none
}
.nav li a.on {
	background: #489539;
}
.nav li.hover {
	background: #489539;
}
.nav li dd a {
	height: 43px;
	line-height: 43px;
	border-top: 1px solid #78b26c;
	font-size: 14px;
}