.centro {
	background-attachment: scroll;
	background-image: url(images/Index_09.jpg);
	background-repeat: no-repeat;
	background-position: center bottom;
}
.fondomenu {
	background-attachment: scroll;
	background-image: url(images/Index_07.jpg);
	background-repeat: no-repeat;
	background-position: center bottom;
}