.preload1 {background: url(/images/menu.jpg);}
.preload2 {background: url(/images/menu_over.png);}

#nav {
	padding:0;
	margin:0;
	list-style:none;
	height:36px;
	position:relative;
	z-index:500;
}
#nav li.top {
	display:block;
	float:left;
}
#nav li a.top_link {
	display:block;
	float:left;
	height:32px;
	text-decoration:none;
	font-size:18px;
	font-weight:bold;
	cursor:pointer;
	font-family: "Times New Roman", Times, serif;
	text-align: center;
	padding-top: 4px;
	padding-right: 13px;
	padding-left: 13px;
	background-image: url(/images/blank.gif);
	color: #CF6;
}

#nav li a.top_link:hover {
	color:#FFF;
	background-image: url(/images/blank_over.gif);
	background-repeat: no-repeat;
}



/* Default list styling */

#nav li:hover {
	position:relative;
	z-index:200;
}
/* keep the 'next' level invisible by placing it off screen. */
#nav ul, #nav li:hover ul ul, #nav li:hover ul li:hover ul ul, #nav li:hover ul li:hover ul li:hover ul ul, #nav li:hover ul li:hover ul li:hover ul li:hover ul ul {
	position:absolute;
	left:-9999px;
	top:-9999px;
	width:0;
	height:0;
	margin:0;
	padding:0;
	list-style:none;
}
#nav li:hover ul.sub {
	left:0;
	top:36px;
	background: #fff;
	padding:3px;
	border:1px solid #3a93d2;
	white-space:nowrap;
	width:auto;
	height:auto;
	z-index:300;
	margin-left: 10px;
	filter: 'alpha(opacity=85)';  /*ie8 */
   *filter: alpha(opacity=85);  /*ie6 ie7 */
	-moz-opacity:0.85;          /* Moz + FF */
	opacity:0.85;               /* 支持CSS3的瀏覽器(FF1.5也支持) */
}
#nav li:hover ul.sub li {
	display:block;
	height:20px;
	position:relative;
	width:auto;
	font-weight:normal;
}
#nav li:hover ul.sub li a {
	display:block;
	font-size:12px;
	height:20px;
	width:auto;
	line-height:20px;
	text-indent:5px;
	color:#000;
	text-decoration:none;
}
#nav li:hover ul.sub li a:hover {
	background:#3a93d2;
	color:#fff;
	width:100%;
}
#nav li:hover ul li:hover ul, #nav li:hover ul li:hover ul li:hover ul, #nav li:hover ul li:hover ul li:hover ul li:hover ul, #nav li:hover ul li:hover ul li:hover ul li:hover ul li:hover ul {
	left:90px;
	top:-4px;
	background: #fff;
	padding:3px;
	border:1px solid #3a93d2;
	white-space:nowrap;
	width:auto;
	z-index:400;
	height:auto;
}
#nav li .current{
	color:#FFF;
	background-image: url(/images/blank_over.gif);
	background-repeat: no-repeat;
	display:block;
	float:left;
	height:32px;
	text-decoration:none;
	font-size:18px;
	font-weight:bold;
	cursor:pointer;
	font-family: "Times New Roman", Times, serif;
	text-align: center;
	padding-top: 4px;
	padding-right: 13px;
	padding-left: 13px;
}