/js?key=YOUR_API_KEY&libraries=visualization">

      var map, heatmap;

      function initMap() {
        map = new google.maps.Map(document.getElementById('map'), {
          zoom: 18,
          center: {lat: 26.263788, lng: -81.583047},
          mapTypeId: 'satellite'
        });

        heatmap = new google.maps.visualization.HeatmapLayer({
          data: getPoints(),
          map: map
        });
        heatmap.set('radius', heatmap.get('radius') ? null : 50);
      }

      function toggleHeatma