title: iframe not rendering in ie9 mode when containing page is in quirks mode
body: <p>I have an iframe in a page that runs in quirks mode (I don't have control over the containing page), and I need my page to render in a mode that is compatible with modern browser features.</p>
  
  <p>The contained page makes heavy use of newer JavaScript features (especially the nice array functions), and SVG rendering.  While I can shim the array functions easily enough, I can't force the svg to render.</p>
  
  <p>To be clear, the inner page is NOT running in quirks mode - I have specified a doctype and the ie=edge &lt; meta > tag.  It looks like it's using the ie8 rendering mode <strike>(hard to be certain)</strike></p>
  
  <p>A sample of the issue is here: <a href="http://stevesspace.com/quirks/quirks.html" rel="noreferrer">http://stevesspace.com/quirks/quirks.html</a> - load it up in chrome to see the expected output, and check it in IE9 or 10 for the actual output.</p>
  
  <p>EDIT: I've added the document mode and compatibility mode to the sample, I can confirm it's using IE8 doc mode.</p>