.arridba {
	background-attachment: scroll;
	background-image: url(images/notis/ariiba.jpg);
	background-repeat: no-repeat;
	background-position: center top;
}
.cente {
	background-attachment: scroll;
	background-image: url(images/notis/medio.jpg);
	background-repeat: repeat-y;
	background-position: center center;
}
.abajo {
	background-attachment: scroll;
	background-image: url(images/notis/abajo.jpg);
	background-repeat: no-repeat;
	background-position: center bottom;
}
.miti {
	background-attachment: scroll;
	background-image: url(images/notis/miti.jpg);
	background-repeat: repeat-x;
	background-position: center center;
}