title: With javascript, how do you get final result URL after 302 redirect on img src?
body: <p>If there is an img tag in a page whose final image it displays comes after a 302 redirect, is there a way with javascript to obtain what that final URL is after the redirect?  Using javascript on img.src just gets the first URL (what's in the page), not what it was redirected to.</p>
  
  <p>Here's a jsfiddle illustration: <a href="http://jsfiddle.net/jfriend00/Zp4zG/" rel="nofollow">http://jsfiddle.net/jfriend00/Zp4zG/</a></p>