title: Blur/focus event (delegeted) on inputs in iframe
body: <p>I have an iframe on a page. In iframe there are few inputs in a form tag and more can be loaded via ajax.</p>
  
  <p>I'm tring to bind blur or focus event to this inputs but it doesn't work. Other events, such as click works very well.</p>
  
  <pre><code>$(function () {
      $("iframe").each(function () {
          $(this).load(function () {
              $(this).contents().find("input").focus(function() { // works but this is only for existing inputs
                  alert(1);
              });
              $(this).contents().find("form").on("click", "input", function (e) { // works
                  alert(1);
              });
              $(this).contents().find("form").on("focus", "input", function (e) { // doesnt work
                  alert(1);
              });
          });
      });
  });
  </code></pre>
  
  <p>Thanks in advance.</p>