function habilitarDeshabilitarEspecificarOtro() { //v3.0
  var obj = document.getElementById("bd_rubro_id");
  if( obj != null ) {
    var objOtro = document.getElementById("bd_rubro_otro");
	if( obj.options[obj.value-1].text == "Otro" ) {
		objOtro.disabled = false;
	} else {
		objOtro.disabled = true;
		objOtro.value = "";
	}
  }
}