.backshow_vert {
margin-left: 0px;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
	background-image: url(../fotos/marco_vert.jpg);
	background-repeat: no-repeat;
	}
.backshow_oriz {
	background-image: url(../fotos/marco_oriz.jpg);
	background-repeat: no-repeat;
	background-position: center center;
	margin: 0px;
	padding: 0px;
}