title: displays infowindow's marker without click
body: <p>I've tried for many hours to open automatically the infowindow's marker as soon as the map is displayed and of course without click on the marker.
  I read a lot of posts but unfortunately i wasn't able to find a solution.</p>
  
  <p>I'm looking for something like this:</p>
  
  <pre><code>google.maps.event.addListener(marker, 'onLoad', function() {infoWindow.open(map,marker);});
  </code></pre>
  
  <p>But it doesn't exists, there is no such event in the api.</p>
  
  <p>Please, is somebody could help me to solve this?</p>
  
  <p>Thank you!</p>