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

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

.layer_board {
	display: none;
	position: absolute;
top: 50%;
left: 50%;
overflow:hidden;
-webkit-transform: translate(-50%,-50%);
-moz-transform: translate(-50%,-50%);
-ms-transform: translate(-50%,-50%);
-o-transform: translate(-50%,-50%);
transform: translate(-50%,-50%);
width:485px;
height:443px;    
	text-align: center;
	z-index: 2000;
}