title: Google Maps API 3 - Info Window Issue
body: <p>What do I need to add &amp; where - to make my markers popup the info window, using my var locations txt?</p>
  
  <pre><code>    &lt;script src="https://maps.googleapis.com/maps/api/js?v=3.exp&amp;sensor=false"&gt;&lt;/script&gt;
      &lt;script&gt;
  
  var map;
  var brooklyn = new google.maps.LatLng(48.1391265, 11.580186300000037);
  
  var MY_MAPTYPE_ID = 'custom_style';
  
  function initialize() {
  
  
    var mapOptions = {
      zoom: 2,
      center: new google.maps.LatLng(48.1391265, 11.580186300000037),
      disableDefaultUI: true,
      mapTypeControl: true,
      mapTypeControlOptions: {
        style: google.maps.MapTypeControlStyle.DROPDOWN_MENU
      },
      zoomControl: true,
      panControl: true,
      mapTypeId: google.maps.MapTypeId.ROADMAP,
          styles: [ { stylers: [ { hue: "#098AAD" } ] } ]
  
    }
    var map = new google.maps.Map(document.getElementById('map-canvas'),
                                  mapOptions);
  
    setMarkers(map, locations);
  }
  
  var locations = [
    ['Plano TX', 33.01984, -96.69889, 13],
    ['Hemel Hempstead UK', 51.75324, -0.44863, 12],
    ['Dubai', 25.27114, 55.30748, 11],
    ['San Francisco CA', 37.77493, -122.41942, 10],
    ['Chicago IL', 41.87811, -87.62980, 9],
    ['New York NY', 40.71435, -74.00597, 8],
    ['Troy MI', 42.60559, -83.14993, 7],
    ['Santa Monica CA', 34.01945, -118.49119, 6],
    ['St Peters MO', 38.78747, -90.62989, 5],
    ['Pittsford NY', 43.09062, -77.51500, 4],
    ['Las Vegas NV', 36.11465, -115.17282, 3],
    ['Haidian Beijing', 39.95991, 116.29805, 2],
    ['New Delhi', 28.63531, 77.22496, 1]
  ];
  
  function setMarkers(map, locations) {
  
    var image = {
      url: 'images/marker-rmg.png',
      size: new google.maps.Size(32, 32),
      origin: new google.maps.Point(0,0),
      anchor: new google.maps.Point(16, 32)
    };
  
    var shape = {
        coord: [1, 1, 1, 20, 18, 20, 18 , 1],
        type: 'poly'
    };
    for (var i = 0; i &lt; locations.length; i++) {
      var location = locations[i];
      var myLatLng = new google.maps.LatLng(location[1], location[2]);
      var marker = new google.maps.Marker({
          position: myLatLng,
          map: map,
          icon: image,
          shape: shape,
          title: location[0],
          zIndex: location[3]
      });
    }
  }
  google.maps.event.addDomListener(window, 'load', initialize);
      &lt;/script&gt;
      &lt;div id="map-canvas" style="height: 300px;"&gt;&lt;/div&gt;
  </code></pre>