* 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 {
	width:100%;
	max-width: 640px;
	display: none;
	position: fixed;
	margin: 5px auto 0px auto;
	text-align: center;
	z-index: 2000;
}



.layer_board img{max-width:95%;margin: 0 auto;}