#wrapper {
	width: 900px;
	height: 700px;
	background: url('../images/bg_index_preopen.png') no-repeat;
	position: absolute;
	top: 50%;
	margin-top: -350px;
	left: 50%;
	margin-left: -450px;
}
#btn_details {
	width: 180px;
	height: 60px;
	background-image: url('../images/btn_detail.png');
	position: absolute;
	bottom: 100px;
	left: 50%;
	margin-left: -87px;
	cursor: pointer;
}