.topic_header {
	margin:0px auto;
	padding:0px;
	width:100%;
	min-width:948px;
	height:33px;
	overflow:hidden;
}
.topic_logo {
	float:left;
	width:110px;
	height:33px;
	text-align:left;
	overflow:hidden;
}
.topic_logo a {
	float:left;
	display:block;
	width:100px;
	height:33px;
	overflow:hidden;
}
ol.topic_head_nav {
	float:left;
	margin:0px;
	padding:5px 0px 0px;
	height:28px;
	line-height:28px;
}
ol.topic_head_nav li {
	float:left;
	margin:0px;
	padding:0px 2px;
	color:#333333;
	font-size:12px;
}
ol.topic_head_nav li a {
	color:#2b2b2b;
	text-decoration:none;
}
.topic_search {
	float:right;
	margin:8px 0px 0px;
	padding:0px 3px 0px 0px;
	width:150px;
	height:25px;
	text-align:right;
	overflow:hidden;
}
.topic_search_key {
	float:left;
	width:100px;
	height:12px;
    line-height:12px;
	overflow:hidden;
}
.topic_search_btn {
	padding:0px;
	width:41px;
	height:18px;
	font-size:10px;
	line-height:18px;
	text-align:center;
	border:0px;
	background:url(http://www.mnw.cn/topic/images/search_btn.gif);
	cursor:pointer;
}