title: Google Map Marker Clusters
body: <p>i've been trying to implement a new feature on one of my Google maps (MarkerClusterer), but i am not quite there yet. </p>
  
  <p>It is running OK, but not smoothly and it would be great if you would look through the code and give me any tips/advice.</p>
  
  <p>I am running a test here: (Link removed) </p>
  
  <ul>
  <li>Please let me know if you need anymore info.</li>
  </ul>
  
  <p>Any help is appreciated :)</p>