title: Explanation needed understanding jQuery objects and offsets
body: <p>So, with <code>var $moving</code> we are creating javascript object, right? But what is <code>$('&lt;li/&gt;')</code>? It is not even an html element. </p>
  
  <p>Also, offset values describes the values of the <code>$this</code> element? So, in this case of the element <code>#slidingMenu li:first</code>? </p>
  
  <pre><code>var $menu = $("#slidingMenu");
  var $selected = $menu.find('li:first');
  var $moving   = $('&lt;li/&gt;',{
      className : 'move',
      top       : $selected[0].offsetTop + 'px',
      width     : $selected[0].offsetWidth + 'px'
  });
  </code></pre>