title: Emberjs + Handlebars + Object onchange and events
body: <p>I'm finding that jQuery observers aren't bound to elements that are not shown in handlebars logic.</p>
  
  <p>Let's say I have the following;</p>
  
  <pre><code>{{#if person}}
    Welcome back, &lt;b&gt;{{person.firstName}} {{person.lastName}}&lt;/b&gt;!
  {{else}}
    Please &lt;a class="login"&gt;log in&lt;/a&gt;.
  {{/if}}
  
  &lt;script&gt;
  $('.login').click(function() {
      alert("Hi there.");
  });
  &lt;/script&gt;
  </code></pre>
  
  <p>If I run in console, person = null (or whatever's needed to convince that person is empty) - the login observer doesn't work. I'm already using embers didInsertElement() to load a few other things, but is there a "onChange" event I can hook into so I can rebind event observers?</p>