function initMap() {

  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: ,
    mapTypeControl: false,
    fullscreenControl: false,
    streetViewControl: false,
    rotateControl: false,
    scaleControl: false,
    zoomControl: true,
    center: {
      lat: ,
      lng: 
    }
  });
  var infoWin = new google.maps.InfoWindow();
  // Add some markers to the map.
  // Note: The code uses the JavaScript Array.prototype.map() method to
  // create an array of markers based on a given "locations" array.
  // The map() method here has nothing to do with the Google Maps API.
  var markers = locs.map(function(location, i) {
    var marker = new google.maps.Marker({
      position: location
    });
    google.maps.event.addListener(marker, 'click', function(evt) {
       var contenido = ('<font size=\'3\'><b><a href=\'//usr/'+locs[i]['usr']+'\''+' target=\'_blank\' style=\'color:#9A090D\'>'+locs[i]['usr']+'</a></b></font>'+'<b><br><font size=\'1\'>'+locs[i]['ins']+' - '+locs[i]['sty']+'</b>');
      infoWin.setContent(contenido);
      infoWin.open(map, marker);
    })
    return marker;
  });

  // Add a marker clusterer to manage the markers.
  var markerCluster = new MarkerClusterer(map, markers, {
    imagePath: 'https://developers.google.com/maps/documentation/javascript/examples/markerclusterer/m'
  });
 
  // event to close the infoWindow with a click on the map
    google.maps.event.addListener(map, 'click', function() {
    infoWin.close();
  });

}

google.maps.event.addDomListener(window, "load", initMap);