title: Iframe content doesn't show on IE
body: <p>We have a plugin which displays content on other websites using an iFrame. In IE 8 and 9, if there's a <code>&lt;!DOCTYPE html&gt;</code> in the parent's page, then the iframe loads, but its content remains blank. </p>
  
  <p>Removing the <code>DOCTYPE</code> from the parent solves this.</p>
  
  <p>I can't go around telling all the people using the plugin not to use <code>&lt;!DOCTYPE html&gt;</code> or to use something else, so I have to find another solution.</p>
  
  <p>I own the code loading the iframe and the code inside the iframe, so any solution which is using these will be welcomed...</p>