var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4],
  ['Coogee Beach', -33.923036, 151.259052, 5],
  ['Cronulla Beach', -34.028249, 151.157507, 3],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
  ['Maroubra Beach', -33.950198, 151.259302, 1]
];

var map = new google.maps.Map(document.getElementById('map'), {
  zoom: 10,
  center: new google.maps.LatLng(-33.92, 151.25),
  mapTypeId: google.maps.MapTypeId.ROADMAP
});

var infowindow = new google.maps.InfoWindow();

var marker, i;

for (i = 0; i < locations.length; i++) {
  marker = new google.maps.Marker({
    position: new google.maps.LatLng(locations[i][1], locations[i][2]),
    map: map
  });

  google.maps.event.addListener(marker, 'click', (function(marker, i) {
    return function() {
      infowindow.setContent(locations[i][0]);
      infowindow.open(map, marker);
    }
  })(marker, i));
}

var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4, "http://i.imgur.com/GyqbZzs.gif"],
  ['Coogee Beach', -33.923036, 151.259052, 5, "http://i.imgur.com/LTCOHYH.gif"],
  ['Cronulla Beach', -34.028249, 151.157507, 3, "http://i.imgur.com/4CCFNWR.gif"],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2, "http://i.imgur.com/dRIZ8LN.gif"],
  ['Maroubra Beach', -33.950198, 151.259302, 1, "http://i.imgur.com/WjZlFve.gif"]
];

marker = new google.maps.Marker({
    position: new google.maps.LatLng(locations[i][1], locations[i][2]),
    map: map,
    icon: locations[i][4]
  });

var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4, "http://i.imgur.com/GyqbZzs.gif"],
  ['Coogee Beach', -33.923036, 151.259052, 5, "http://i.imgur.com/LTCOHYH.gif"],
  ['Cronulla Beach', -34.028249, 151.157507, 3, "http://i.imgur.com/4CCFNWR.gif"],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2, "http://i.imgur.com/dRIZ8LN.gif"],
  ['Maroubra Beach', -33.950198, 151.259302, 1, "http://i.imgur.com/WjZlFve.gif"]
];

var map = new google.maps.Map(document.getElementById('map'), {
  zoom: 10,
  center: new google.maps.LatLng(-33.92, 151.25),
  mapTypeId: google.maps.MapTypeId.ROADMAP
});

var infowindow = new google.maps.InfoWindow();

var marker, i;

for (i = 0; i < locations.length; i++) {
  marker = new google.maps.Marker({
    position: new google.maps.LatLng(locations[i][1], locations[i][2]),
    map: map,
    icon: locations[i][4]
  });

  google.maps.event.addListener(marker, 'click', (function(marker, i) {
    return function() {
      infowindow.setContent(locations[i][0]);
      infowindow.open(map, marker);
    }
  })(marker, i));
}

var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4, 'ruta/a/tu/imagen1.png'],
  ['Coogee Beach', -33.923036, 151.259052, 5, 'ruta/a/tu/imagen2.png'],
  ['Cronulla Beach', -34.028249, 151.157507, 3, 'ruta/a/tu/imagen3.png'],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2, 'ruta/a/tu/imagen4.png'],
  ['Maroubra Beach', -33.950198, 151.259302, 1, 'ruta/a/tu/imagen5.png']
];

var marker = new google.maps.Marker({
    position: new google.maps.LatLng(locations[i][1], locations[i][2]),
    map: map,
    icon: locations[i][4]
});