title: Marker Clusterer Plus change icon on hover
body: <p>How can I dynamically change the Icon used for a specific Cluster in <a href="http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclustererplus/docs/reference.html" rel="nofollow">Marker Clusterer Plus</a> for Google Maps V3?</p>
  
  <p>The markers do not seem to expose any methods at all to modify them. I need to do something like this (or equivalent).</p>
  
  <pre><code>google.maps.event.addListener(markerCluster, "mouseover", function (cluster) {
    cluster.setIcon(hoverIcon);
  });
  google.maps.event.addListener(markerCluster, "mouseout", function (cluster) {
    cluster.setIcon(normalIcon);
  });
  </code></pre>