body {
	font-size: 14px;
	text-align: center;
	background-image: url(../images/bg_pub_line.gif);
	background-repeat: repeat-x;
	color: #552902;
}
div{
	margin: auto;
}

.prcontit_zsdjs{
	width: 230px;
	height: 45px;
	background-image: url(../images/prcon_tit.gif);
	background-repeat: no-repeat;
	float: left;
	text-align: left;
}

.prcontit_zsdjs{
	background-position: 0px -135px;
}

.bstudy{
	height: 100%;
	overflow: hidden;
	background-color: #FFFFFF;
	border: 1px #92541F solid;
	text-align: center;
}
.coursetit{
	height: 35px;
	line-height:35px;
	background-color: #FFFD8D;
	text-align: left;
	padding: 0px 10px;
	border-bottom: #955819 1px solid;
}
.coursetit .rt{
	float: right;
	height: 35px;
	line-height:35px;
}
.bstudy table{
	width: 100%;
	border-collapse:collapse;
}
.bstudy td{
	text-align: left;
	padding: 8px;
	width:25%;
	border-right: 1px #D4C9B0 solid;
}
.knowmenu{
	width: 615px;
	height: 100%;
	line-height: 24px;
	overflow: hidden;
	padding: 10px;
	text-align: left;
	border: 1px #965A26 solid;
	background-color: #FFFD8D;
}
.grademenu,.gradeon{
	float:left;
	width:82px;
	height:26px;
	font-weight:bold;
	font-size:14px;
	color:#FFFFFF;
	text-align:center;
	margin-right:5px;
	_margin-right:3px;
	cursor: pointer;
	background-image: url(../images/grademenu.gif);
	background-repeat: no-repeat;
	background-position: 0px 0px;
}

.gradeon{
	background-position: -164px 0px;
}
a:hover .gradeon{
	background-position:-82px 0px;
	border:none;
	text-decoration:none;
} 
a:hover .grademenu{
	background-position:-82px 0px;
	border:none;
	text-decoration:none;
}

.unitpre{
	width: 100px;
	text-align: left;
	float: left;
}
.unittit{
	width:400px;
	text-align: center;
	float: left;
}
.unitnext{
	width: 100px;
	text-align: right;
	float: left;
}

