title: Scalable google maps overlay
body: <p>Is it possible to add an image overlay to a google map that scales as the user zooms?</p>
  
  <p>My current code works like this:</p>
  
  <pre><code>var map = new GMap2(document.getElementById("gMap"));
  
  var customIcon = new GIcon();
  customIcon.iconSize = new GSize(100, 100);
  customIcon.image = "/images/image.png";
  
  map.addOverlay(new GMarker(new GLatLng(50, 50), { icon:customIcon }));
  </code></pre>
  
  <p>However, this adds an overlay that maintains the same size as the user zooms in and out (it is acts as a UI element like the sidebar zoom control).</p>