function zmienForm(id, radio){
  if(radio.checked){
    document.getElementById('i1').disabled = true;
    document.getElementById('i2').disabled = true;
    document.getElementById('i3').disabled = true;
    document.getElementById('i4').disabled = true;
    document.getElementById('i5').disabled = true;
    document.getElementById('i6').disabled = true;
    document.getElementById('i7').disabled = true;
    document.getElementById('i8').disabled = true;
    document.getElementById('i9').disabled = true;
    document.getElementById('i10').disabled = true;
    document.getElementById('i11').disabled = true;
    document.getElementById('i12').disabled = true;
    document.getElementById('i21').disabled = true;
    document.getElementById('i22').disabled = true;

    document.getElementById('tel1').disabled = false;
    document.getElementById('tel2').disabled = false;
    document.getElementById('tel3').disabled = false;
  }
  // tutaj implementujesz wyłączanie 'disabled' dla pozostałych pól
}

function zmienForm2(id, radio){
  if(radio.checked){
        document.getElementById('i1').disabled = false;
    document.getElementById('i2').disabled = false;
    document.getElementById('i3').disabled = false;
    document.getElementById('i4').disabled = false;
    document.getElementById('i5').disabled = false;
    document.getElementById('i6').disabled = false;
    document.getElementById('i7').disabled = false;
    document.getElementById('i8').disabled = false;
    document.getElementById('i9').disabled = false;
    document.getElementById('i10').disabled = false;
    document.getElementById('i11').disabled = false;
    document.getElementById('i12').disabled = false;
    document.getElementById('i21').disabled = false;
    document.getElementById('i22').disabled = false;

    document.getElementById('tel1').disabled = true;
    document.getElementById('tel2').disabled = true;
    document.getElementById('tel3').disabled = true;
  }
}