html {
	height: 100%;
}
body {
	background-image: url(../graphics/bg.jpg);
	background-repeat: repeat-x;
	margin: 0px;
	height: 100%;
}
.div-center {
	height: 100%;
	width: 800px;
	margin-right: auto;
	margin-left: auto;
	position: relative;
}
.main {
	height: 100%;
	position: relative;
}