var map;var infoWindow;var markerArray = []; map = new google.maps.Map(document.getElementById('divMap'), { zoom: 5, center: { lat: 0, lng: 0}, mapTypeId: 'terrain' });var polygons = [];var mc = new MarkerClusterer(map, [], {imagePath: '../../images/maps/m'});mc.addMarkers(markerArray, true);