.fonconst {
	background-attachment: scroll;
	background-color: #000000;
	background-image: url(../media/fon_const.jpg);
	background-repeat: no-repeat;
	background-position: center center;
}
.subrayado {
	background-attachment: scroll;
	background-image: url(../movil/media/subrayado.gif);
	background-repeat: repeat-x;
	background-position: center top;
}