title: Marker Manager doesnt work in Maps API 3.10
body: <p>Marker Manager doesn't work on Google Maps API v3.10 and in current.</p>
  
  <p>If you check it's example page 
  <a href="http://google-maps-utility-library-v3.googlecode.com/svn/tags/markermanager/1.0/examples/google_northamerica_offices.html" rel="nofollow">http://google-maps-utility-library-v3.googlecode.com/svn/tags/markermanager/1.0/examples/google_northamerica_offices.html</a>
  you'll see that map is not changed by zoom control, and there is no any marker. And you will see the following JavaScript error:</p>
  
  <blockquote>
    <p>Uncaught TypeError: Cannot call method 'substr' of undefined </p>
  </blockquote>
  
  <p>But if you load Maps API for version <code>v=3.9</code>, then all will be OK (I checked it on my test page).</p>
  
  <p>I think there is a bug in manager's script file.</p>