function find() {
  if (!navigator.geolocation){
    output.innerHTML = "<p>Geolocation is not supported by your browser</p>";
    return;
  }

  function success(position) {
    var latitude  = position.coords.latitude;
    var longitude = position.coords.longitude;
    // alert(latitude + ' ' + longitude);
  };

  function error() {
    var error = "Unable to retrieve your location";
    // alert(error);
  };

  navigator.geolocation.getCurrentPosition(success, error);
}

find();