title: googlemaps api v2 to v3
body: <p>I searched and tried but failed
  I am using an older version of ez realty which seems to call google maps with this code:</p>
  
  <pre><code>   &lt;script src="http://maps.google.com/maps?file=api&amp;amp;v=2.x&amp;amp;key=&lt;?php echo     $config-&gt;er_mapapi;?&gt;" type="text/javascript"&gt;&lt;/script&gt;    
  </code></pre>
  
  <p>which now produces a grey rectangle but no map anymore </p>
  
  <p>Tried to replace that with v3 googlemap api :</p>
  
  <pre><code>    &lt;script type="text/javascript" src="//maps.googleapis.com/maps/api/js?key=&lt;?php echo $config-&gt;er_mapapi;?&gt;&amp;sensor=false"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>but that just produces a white area where the map used to be, so obviously not calling the map right.</p>