function change_annual_guest_pass (checkbox) {
  var node = document.getElementById ('annual_guest_pass');
  
  if (!node) return;
  
  if (checkbox.checked) {
    node.style.display = '';
  } else {
    node.style.display = 'none';
  }
}

function change_residential_address (checkbox) {
  var node = document.getElementById ('residential');
  
  if (checkbox.checked) {
    node.style.display = 'none';
  } else {
    node.style.display = '';
  }
}