div.mainContainer {
	position: absolute;
	background-image: url('images/backgroundGrid.jpg');
	background-attachment: scroll;
	background-position: center center; 
	background-repeat: no-repeat;
	left: 0px; 
	top: 0px; 
	width: 100%; 
	height: 100%; 
	min-height: 600px; 
	min-width: 800px; 
	text-align: center;
}