.back {
	background-image: url(entree_v1.jpg);
	background-repeat: no-repeat;
	background-position: center;
}
.back2 {

	background-image: url(entree_v2.jpg);
	background-repeat: no-repeat;
}
.backnav2 {


	background-image: url(nav_v2.jpg);
	background-repeat: no-repeat;
}