title: iframe - set Content Type header
body: <p>I would like to display a JPEG image dynamically using iframe, but its header should be <code>"Content-type: image/jpeg"</code>. </p>
  
  <p>Is this possible?</p>
  
  <p>This would be a workaround for displaying base64 images in IE7:</p>
  
  <p>1) get base 64 code</p>
  
  <p>2) decode it using js</p>
  
  <p>3) generate iframe image</p>