title: How to detect if google map loaded successfully
body: <p>I'm using google-maps version 3 in my website.</p>
  
  <p>I ran through problems where the map sometimes does not load, but instead it will be shown as a grey box, and the browser log will be fulled with errors - unfortunately I can't get the log now because the map is working again.</p>
  
  <p>According to some researches, the problem is because of the experimental version I'm using </p>
  
  <pre><code>&lt;script src="https://maps.googleapis.com/maps/api/js?v=3.exp&amp;signed_in=false"&gt;&lt;/script&gt;
  </code></pre>
  
  <p>Is There a way to find out if the map has been loaded successfully or crashed so I can tell the user to come back soon?</p>
  
  <p><em>P.S. I tried the <strong>idle</strong> event, but it has been invoked even when the map crashed.</em></p>