/* 代码整理：时代Java NowJava.com */
* {
	padding:0;
	margin:0
}
body {
	font:12px Verdana, Arial, Helvetica
}
#wrapper {
	width:750px;
	padding:25px;
	margin:0 auto
}
#leftcolumn {
	float:left;
	width:225px
}
#rightcolumn {
	float:left;
	width:525px
}
.dropdown {
	display:block;
	position:relative
}
.dropdown dt {
	width:188px;
	border:2px solid #9ac1c9;
	padding:8px;
	font-weight:bold;
	cursor:pointer;
	background:url(../images/header.gif)
}
.dropdown .upperdd {
	border-bottom:none
}
.dropdown dt:hover {
	background:url(../images/header_over.gif)
}
.dropdown dd {
	position:absolute;
	top:0;
	overflow:hidden;
	width:208px;
	display:none;
	background:#fff;
	opacity:0
}
.dropdown ul {
	width:204px;
	border:2px solid #9ac1c9;
	list-style:none
}
.dropdown li {
	display:inline
}
.dropdown a, .dropdown a:active, .dropdown a:visited {
	display:block;
	padding:5px;
	color:#333;
	text-decoration:none;
	background:#eaf0f2;
	width:194px
}
.dropdown a:hover {
	background:#d9e1e4;
	color:#000
}
.dropdown .underline {
	border-bottom:1px solid #b9d6dc
}