#bg, #bg table, #bg td {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

#bg {
    position: fixed;
    background-attachment:fixed;
}

#bg div {
    height: 200%;
    left: -50%;
    position: absolute;
    top: -50%;
    width: 200%;
}

#bg td {
    text-align: center;
    vertical-align: middle;
}

#bg img {
    margin: 0 auto;
    min-height: 50%;
    min-width: 50%;
}

#scroller {
	position: absolute;
	top: 0; left: 0;
	width: 100%;
	height: 100%;
	overflow: auto;
	z-index: 100;
	min-height: 100%;	
}