function showError(error) {
  switch(error.code) {
    case error.PERMISSION_DENIED:

      x.innerHTML = "User denied the request for Geolocation."

      break;
    case error.POSITION_UNAVAILABLE:

      x.innerHTML = "Location information is unavailable."
      break;
    case error.TIMEOUT:

      x.innerHTML = "The request to get user location timed out."

      break;
    case error.UNKNOWN_ERROR:
      x.innerHTML = "An unknown error occurred."
      break;

  }

}