title: Window.open and modifying DOM of new window
body: <p>Suppose I open a new window using:</p>
  
  <pre><code>newWindow = window.open(newUrl)
  var ul = newWindow.document.getElementsByTagName("ul")[0];
  ul.innerHTML = "new content";
  </code></pre>
  
  <p>However, this doesn't modify the DOM of the new window at all.. </p>
  
  <p>Is there a way to do what I want to do? which is modify the DOM of a new window opened thru window.open?</p>
  
  <p>Note that the last 2 lines work if I put it in the js for the opened page, so there's nothing wrong with my DOM manipulation code.</p>