title: MooTools: Get child nodes
body: <p>I have the ID of an element. I want to retrieve all child <em>elements</em> and all text <em>nodes</em>. Is there a way to do this in MooTools? </p>
  
  <p>For example, say I have this markup:</p>
  
  <pre><code>&lt;div id="foobar"&gt;
      test &lt;img /&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>How can I use $('foobar') to select both text node "test" and element "img", like they're siblings?</p>