#blackboard {
	text-align: center;
}

#blackboard1 {
	margin: 0 auto;
	margin-top: 30px;
	width: 500px;
	height: 60px;
	background-image:url("index_pic/black_board1.gif");
	background-position: center top;
	background-repeat: no-repeat;

}

#blackboard2 {
	margin: 0 auto;
	width: 500px;
	background-image:url("index_pic/black_board2.gif");
	background-position: center top;
	background-repeat: repeat-y;
	background-color: green;

}

#blackboard3 {
	margin: 0 auto;
	margin-bottom: 30px;
	width: 500px;
	height: 30px;
	background-image:url("index_pic/black_board3.gif");
	background-position: center top;
	background-repeat: no-repeat;

}

p.blackboard {
	color: #FFFFFF;
	font-size: 95%;
	margin-top: 0px;
	margin-left: 50px;
	margin-right: 50px;
	margin-bottom: 0px;
	text-align: left;
}

div.main_menu {
	text-align: center;
	margin-bottom: 30px;
}