GOOGLE MAP WITH MULTIPLE MARKERS AND CUSTOM MARKER ICON

gmap.html

<!-- GOOGLE MAP -->
<script async="" defer="" type="text/javascript" src="https://maps.googleapis.com/maps/api/js?callback=initializeMap&key=<--KEY-->"></script>
<!-- GOOGLE MAP -->

<script type="text/javascript">
//INITIALIZE GOOGLE MAP WITH MULTIPLE MARKERS AND CUSTOM MARKER ICON.
var markers = [
    ['Bondi Beach', -33.890542, 151.274856],
    ['Coogee Beach', -33.923036, 151.259052],
    ['Cronulla Beach', -34.028249, 151.157507],
    ['Manly Beach', -33.80010128657071, 151.28747820854187],
    ['Maroubra Beach', -33.950198, 151.259302]
];

function initializeMap() {

    var latlng = new google.maps.LatLng(-33.92, 151.25);

    var myOptions = {
        scrollwheel: false,
        draggable: true,
        disableDefaultUI: false,
        center: latlng,
        zoom: 14,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };

    //BIND MAP TO ELEMET WITH ID MAP-CANVAS
    var map = new google.maps.Map(document.getElementById('map-canvas'), myOptions);

    var infowindow = new google.maps.InfoWindow(), marker, i;
    var bounds = new google.maps.LatLngBounds();
    for (i = 0; i < markers.length; i++) {
        var pos = new google.maps.LatLng(markers[i][1], markers[i][2]);
        bounds.extend(pos);
        marker = new google.maps.Marker({
            position: pos,
            icon: location.href + '/images/map-marker.png',
            map: map
        });
        google.maps.event.addListener(marker, 'click', (function(marker, i) {
            return function() {
                infowindow.setContent(markers[i][0]);
                infowindow.open(map, marker);
            }
        })(marker, i));
        map.fitBounds(bounds);
    }
}
</script>


<div class="map-wrapper">
  <div class="map-canvas" id="map-canvas">Loading map...</div>
</div>