body {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	margin: 0;
	font-size: 80%;
	font-weight: bold;
}
ul {
	list-style: none;
	margin: 0;
	padding: 0;
}
/* =-=-=-=-=-=-=-[Nav 1]-=-=-=-=-=-=-=- */
	#nav_container {
	width:145px;
	margin-left:30px;
	margin-top:30px;
	float:left;
}
#nav_container li {
	padding:0px;
	margin-bottom:1px;
}
#nav_container {
	margin-left:30px;
}
#nav_container a:link, #nav_container a:visited, #nav_container a:active {
	width:145px;
	background: url(../images/bg3.gif) -200px 0px repeat-x;
	height:30px;
	padding-top:5px;
	padding-left:50px;
	border-bottom:1px solid #777;
	display:block;
	text-decoration:none;
	text-align:left;
	font-weight:bold;
	color:#333;
}
#nav_container a:hover {
	color:#000;
	background: url(../images/bg3.gif) 0px 0px repeat-x;
}
/* =-=-=-=-=-=-=-[Nav 2]-=-=-=-=-=-=-=- */	
	#nav_container2 {
	width:145px;
	margin-left:60px;
	margin-top:30px;
	float:left;
}
#nav_container2 li {
	padding:0px;
	margin-bottom:1px;
}
#nav_container2 a:link, #nav_container2 a:visited, #nav_container2 a:active {
	width:145px;
	background: url(../images/bg2.gif) 0px 0px repeat-x;
	font-weight:bold;
	height:30px;
	padding-top:5px;
	padding-left:50px;
	display:block;
	text-align:left;
	border-bottom:1px solid #777;
	text-decoration:none;
	color:#333;
}
#nav_container2 a:hover {
	color:#000;
	background: url(../images/bg2.gif) 0px -45px repeat-x;
}
/* =-=-=-=-=-=-=-[Nav 3]-=-=-=-=-=-=-=- */	
	#nav_container3 {
	width:145px;
	margin-left:60px;
	margin-top:30px;
	float:left;
}
#nav_container3 li {
	padding:0px;
	margin-bottom:1px;
}
#nav_container3 a:link, #nav_container3 a:visited, #nav_container3 a:active {
	width:145px;
	background: url(../images/bg4.gif) -200px 0px repeat-x;
	font-weight:bold;
	height:30px;
	padding-top:5px;
	padding-left:50px;
	display:block;
	text-align:left;
	border-bottom:1px solid #777;
	text-decoration:none;
	color:#333;
}
#nav_container3 a:hover {
	color:#000;
	background: url(../images/bg4.gif) -24px 0px repeat-x;
}
/* =-=-=-=-=-=-=-[Nav 4]-=-=-=-=-=-=-=- */	
	#nav_container4 {
	width:788px;
	margin-left:60px;
	margin-top:30px;
	float:left;
}
#nav_container4 li {
	padding:0px;
	margin-bottom:1px;
	float:left;
	border-right:1px solid #ccc;
	border-left: 1px solid #888;
}
#nav_container4 a:link, #nav_container4 a:visited, #nav_container4 a:active {
	width:145px;
	background: url(../images/bg5.gif) 0px -70px repeat-x;
	font-weight:bold;
	height:30px;
	padding-top:5px;
	display:block;
	text-align:center;
	border-bottom:1px solid #777;
	text-decoration:none;
	color:#333;
}
#nav_container4 a:hover {
	color:#000;
	background: url(../images/bg5.gif) 0px 0px repeat-x;
}
/* =-=-=-=-=-=-=-[Nav 5]-=-=-=-=-=-=-=- */
	#nav_container5 {
	width:145px;
	margin-left:30px;
	margin-top:30px;
	float:left;
}
#nav_container5 li {
	padding:0px;
	margin-bottom:1px;
}
#nav_container5 {
	margin-left:30px;
}
#nav_container5 a:link, #nav_container5 a:visited, #nav_container5 a:active {
	width:145px;
	height:30px;
	padding-top:5px;
	padding-left:50px;
	border-bottom:1px solid #777;
	display:block;
	text-decoration:none;
	text-align:left;
	font-weight:bold;
	color:#333;
	text-indent:-300px;
	overflow:hidden;
}
#nav_container5 a:hover {
	color:#000;
}
#nav_home {
	background-image: url(../images/bg7.gif);
	background-position: 0px 0px;
}
#nav_home:hover {
	background-image: url(../images/bg7.gif);
	background-position: 0px -45px;
}
#nav_about {
	background-image: url(../images/bg8.gif);
	background-position: 0px 0px;
}
#nav_about:hover {
	background-image: url(../images/bg8.gif);
	background-position: 0px -45px;
}
#nav_port {
	background-image: url(../images/bg9.gif);
	background-position: 0px 0px;
}
#nav_port:hover {
	background-image: url(../images/bg9.gif);
	background-position: 0px -45px;
}
#nav_con {
	background-image: url(../images/bg10.gif);
	background-position: 0px 0px;
}
#nav_con:hover {
	background-image: url(../images/bg10.gif);
	background-position: 0px -45px;
}
/* 代码整理：时代Java */