createObjectURL() can't be found in either IE or Firefox
<p>In Javascript, I am trying to generate a URL for an image stored as an array of bytes so I can generate an  tag for it.  However, no matter what I try, createObjectURL(blob) always seems to throw some sort of "method not recognized" exception.  I have tried window.URL.createObjectURL, window.webkitURL.createObjectURL, and straightforward window.createObjectURL (and yes, I realize that different browsers will need different versions, and I even tried mozURL at some point).</p>

<p>This happens with IE 8.0.7601 and Firefox 14.0.1.  Does createObjectURL exist in these releases, and if so, in what libraries?</p>
