title: Close all infowindows in Google Maps API v3
body: <p>I am busy with a script that will make a google maps canvas on my website, with multiple markers. I want that when you click on a marker, a infowindow opens. I have done that, and the code is at the moment:</p>
  
  <pre><code> var latlng = new google.maps.LatLng(-34.397, 150.644);
      var myOptions = {
        zoom: 8,
        center: latlng,
        mapTypeId: google.maps.MapTypeId.ROADMAP
      };
      var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
      function addMarker(map, address, title) {
       geocoder = new google.maps.Geocoder();
       geocoder.geocode( { 'address': address}, function(results, status) {
          if (status == google.maps.GeocoderStatus.OK) {
            map.setCenter(results[0].geometry.location);
            var marker = new google.maps.Marker({
       position: results[0].geometry.location,
                map: map,
                title:title
      });
      google.maps.event.addListener(marker, 'click', function() {
       var infowindow = new google.maps.InfoWindow();
              infowindow.setContent('&lt;strong&gt;'+title + '&lt;/strong&gt;&lt;br /&gt;' + address);
               infowindow.open(map, marker);
  
            });
          } else {
            alert("Geocode was not successful for the following reason: " + status);
          }
       });
      }
      addMarker(map, 'Address', 'Title');
   addMarker(map, 'Address', 'Title');
  </code></pre>
  
  <p>This works 100%. But now i want that when one infowindow is open, and you want to open the second, the first one automaticly closes. But i haven't found a way to do that. infowindow.close(); won't help. Has someone an example or a solution to this problem?</p>