#contenedor
{
	margin: 0 auto 0 auto;
	margin-left: -475px;
	margin-top: -275px;
	position: absolute;
	width:950px;
	height:550px;
	top: 50%;
	left: 50%;
	z-index:1;
	overflow: hidden;
}

#fondo
{
	width:950px;
	height:550px;
	position: absolute;
	left: 0px;
	top: 0px;
	z-index: 2;
	background-color:#000000;
	overflow: hidden;
}