#lay_main
{
	position: absolute;
	left: 50%;
	top: 50%;
	width: 750px;
	height: 550px;
	margin-top: -275px;
	margin-left: -375px;
	border-right: 1px solid black;
	border-bottom: 1px solid black;
	border-left: 1px solid silver;
	border-top: 1px solid silver;
	text-align: center;
	background-color: #fff;
	background-image: url(hp/images/logo_500_10.jpg);
	background-repeat: no-repeat;
	background-position: center;
}