.nav{
	width:100%;
	margin:0 auto;
	background:#064d84;
	position:fixed;
	top:80px;
	z-index:9999;
/*	box-shadow:0 0 3px #333*/
}
.menu {
	height: 40px;
	display: block;
	padding: 0px;
	width: 1002px;
	margin-top: 0px;
	margin-right: auto;
	margin-left: auto;
}

.menu ul {
			list-style: none;
			padding: 0;
}

.menu ul li {
	/* width and height of the menu items */  
	float: left;
	overflow: hidden;
	position: relative;
	line-height: 40px;
	text-align: center;
}

.menu ul li a {
			/* must be postioned relative  */ 
			position: relative;
			display: block;
			width: 111px;
			height: 40px;
			font-family: "微软雅黑", "宋体";
			font-size: 14px;
			font-weight:bold;
			text-decoration: none;
			cursor: pointer;
}

.menu ul li a span {
			/* all layers will be absolute positioned */
			position: absolute;
			left: 0;
			width: 90px;
}

		.menu ul li a span.out {
			top: 0px;
}

		.menu ul li a span.over,
		.menu ul li a span.bg {
			/* hide */  
			top: -40px;
}
		
		/** 2nd example **/

#menu2 {
			background: #064d84;	
}
		
#menu2 ul li a {
			color: #FFF;
}

#menu2 ul li a span.over {
	color: #F00;
	background-color: #f0f0f0;
}