title: How to display multiple markers icon on Gmap3 clustering mod
body: <p>I am using gmap3 script to show clustering markers, but i have some questions about it.</p>
  
  <p>First of all my code looks like this.
  <a href="http://www.ngondesign.com/map/" rel="nofollow">http://www.ngondesign.com/map/</a></p>
  
  <p>Gmap3 script has "clusters" option. It allows 3 easy steps to create cluster icons.
  For example 0: first icon set, 20: second icon set and 50: third icon set. When build icons, I think gmap capture zoom level and then change icon class. First question is when I click to green cluster icon, how do script get related zoom level?</p>
  
  <p>Second question is when the clusters open, is it possible to show two kinds of icons?
  Because, I need two icons end of the maximum zoom level or when the clusters open.</p>
  
  <p>Thanks</p>