title: adding click listener on circle is not working
body: <p>I am trying to add click listener on  my map and here is my code for this</p>
  
  <p><strong>update</strong></p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
    &lt;head&gt;
    &lt;script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;style&gt;
      #map-canvas{
   width:500px; 
   height:500px;
  }
  &lt;/style&gt;
  &lt;script  type="text/javascript"&gt;
      var cityPoints = {
          center: new google.maps.LatLng(41.878113, -87.629798),
          id: 0,
          addr: 'avenue0',
          magnitude: 100000
      };
  
      var cityCircle;
      var infoWindow = new google.maps.InfoWindow({
          content: "&lt;div&gt;Hello! World&lt;/div&gt;",
          maxWidth: 500
      });
  
  
    function initialize() {
   var mapOptions = {
       zoom: 4,
       center: new google.maps.LatLng(31.2330555556, 72.3330555556),
       mapTypeId: google.maps.MapTypeId.TERRAIN
   };
  
    var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
  
    var populationOptions = {
        strokeColor: "#FF0000",
        strokeOpacity: 1,
        strokeWeight: 1,
        clickable: true,
        fillOpacity: 0,
        map: map,
        center: new google.maps.LatLng(31.231867, 72.33336),
        radius: 200000
    };
  
    cityCircle = new google.maps.Circle(populationOptions);
  
  
      google.maps.event.addListener(cityCircle, 'click', function (ev) {
          infoWindow.setPosition(ev.latLng);
          infoWindow.open(map);
      });
  }
  initialize();
  &lt;/script&gt;
  &lt;body&gt;
      &lt;div id="map-canvas"&gt;&lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>But this code is not working for me becasue infor window is not opening when i click on circle.Plz any one tell what exactly i am missing in my code.Plz Help</p>