$data = $expedienteTecnico->buscarCombos();
     $rcobertura = "<option value=''>Selecciona...</option>";
     foreach ($data['cobertura'] as $key => $rows) {
         $rcobertura .= "<option value='" . $rows['IdCob'] . "'>" . $rows['NomCob'] . "</option>";
     }
     $rtiploc = "<option value=''>Selecciona...</option>";
     foreach ($data['tiploc'] as $key => $rows) {
         $rtiploc .= "<option value='" . $rows['idTipLoc'] . "'>" . $rows['NomTipLoc'] . "</option>";
     }
     $combos['cobertura'] = $rcobertura;
     $combos['tiploc'] = $rtiploc;
     echo json_encode($combos);
     break;
 case "cambioCobertura":
     $comboRegMun = "";
     $data = $expedienteTecnico->cambioCobertura($tipoCobertura);
     switch ($tipoCobertura) {
         case 2:
             foreach ($data as $key => $rows) {
                 $comboRegMun .= "<option value='" . $rows['IdReg'] . "'>" . $rows['CveReg'] . " " . utf8_encode($rows['NomReg']) . "</option>";
             }
             break;
         case 3:
             foreach ($data as $key => $rows) {
                 $comboRegMun .= "<option value='" . $rows['IdMun'] . "'>" . utf8_encode($rows['NomMun']) . "</option>";
             }
             break;
     }
     echo $comboRegMun;
     break;
 case "buscaSolicitud":