ker' in navigator) {
    navigator.serviceWorker.register('sw.js');
  }
  document.addEventListener("DOMContentLoaded", function(e) { sw_init('map_general'); } );
function toMap() {
  map.setStyle('styles/map.json');
} // toMap
function toOrto() {
  map.setStyle('styles/hybrid.json');
} // toOrto
</script>
</body>
</html>
