title: How to check if Google Street View Image API returns no image?
body: <p>I am using <a href="http://code.google.com/intl/sv-SE/apis/maps/documentation/streetview/index.html">Google Street View image API</a> to show an image of a location.</p>
  
  <p>It works fine, however when no picture is available i get a black image instead of a location picture. Is there any way I can check if no image is returned and show another image instead? </p>