html,body {
	height: 100%;
}

* html .layer_board_bg,
* html .layer_board {
	position: absolute;
}

.layer_board_bg {
	position: fixed;
	width: 100%;
	height: 100%;
	
	z-index: 1000;
	
	top: 0;
	left: 0;
	
	display: none;
	cursor: pointer;
	background: #000;
}

.layer_board {
	display: none;
	position: fixed;
	left: 50%;
	margin: 50px 0px 0px -285px;
	
	text-align: center;
	z-index: 2000;
}

/* 追加 */
.layer_board {
	position: absolute;
	margin: 20px 0 0 -425px;
	padding: 20px;
	background: #eeeeee;
	border: 5px solid #666;
}

.btn_close a {
	display: block;
	color: #000000;
	margin: 10px 0 0;
}