title: jQuery animation only working in IE
body: <p>I have a very simple animation, were I have a tab at the side of the screen and if you click it, it will increase size. But it´s only working on IE, here is the code:</p>
  
  <pre><code>&lt;script&gt; 
  $(function(){
    $("#a-tab &gt; *").focusin(function(){
      $("#a-tab").animate({width:'320px'});
    });
    $("#a-tab &gt; *").focusout(function(){
      $("#a-tab").animate({width:'10px'});
    });
  });
  &lt;/script&gt;
  </code></pre>
  
  <p>It has to be <code>#a-tab &gt; *</code> because of the inside content</p>
  
  <p>Were is the problema, how can I make it compatible with Chrome, Firefox, etc.</p>