title: document.elementFromPoint(x,y) to get element inside iframe
body: <p>I am trying to get elements in html page, i use document.elementFromPoint(x,y) to detect input elements; it works fine when there are no iframes. But inside iframes it does not work inside this code</p>
  
  <p>the html as follow</p>
  
  <p>Am I missihng something?</p>
  
  <pre><code>&lt;html&gt;
  ...
  &lt;div&gt;
  &lt;div&gt;
  &lt;iframe src="some source"..&gt;  
  &lt;html&gt;
  ..
  &lt;form&gt;
  &lt;fieldset&gt;
  &lt;input&gt;
  </code></pre>
  
  <p>Thanks</p>