#layer1 {
	position : absolute;
	left: 50%;
	top: 50%;
	margin-left: -450px; 
	margin-top: -325px;
	z-index : 5;
}

#layer2 {
	position : absolute;
	left: 50%;
	top: 50%;
	margin-left: -450px; 
	margin-top: -325px;
	z-index : 10;
}