.bgMain {
	background-attachment: fixed;
	background-image: url(../images/digiMuseum_r3_c3.gif);
	background-repeat: no-repeat;
	background-position: right bottom;
}
.bgAdvance {
	background-attachment: fixed;
	background-image: url(../images/advance/advance_r3_c1.gif);
	background-repeat: no-repeat;
	background-position: right bottom;
}