title: Apply function across windows
body: <p>Let's say that the main window (w2) is inserted vía iFrame (w1) to a page where I can't modify source code. When you submit a form in w2, a third iFrame (w3) is inserted. When I wrote the code, w1 didn't exist. What I need is that from w3 a function is called (affecting w2) but keep (w1) working. This is the code which worked without w1</p>
  
  <pre><code>var cross = "javascript: window.parent.$('#"+div_id+"').html(document.body.innerHTML); void(0);";
  </code></pre>
  
  <p>Thanks!
  :D</p>