.sombra_izq{
	background-image: url(../img/sombra_izq.png);
	position: relative;
	height: 1px;
	width: 3px;
}

.sombra_der{
	background-image: url(../img/sombra_der.png);
	position: relative;
	height: 1px;
	width: 3px;
}

.sombra_izq_cab{
	background-image: url(../img/sombra_izq_cab.png);
	position: relative;
	height: 1px;
}

.sombra_der_cab{
	background-image: url(../img/sombra_der_cab.png);
	position: relative;
	height: 1px;
}

.sombra_izq_bottom{
	background-image: url(../img/sombra_izq_bottom.png);
	position: relative;
	height: 1px;
}

.sombra_der_bottom{
	background-image: url(../img/sombra_der_bottom.png);
	position: relative;
	height: 1px;
}