title: jQuery doesn't find elements or its attributes
body: <p>I've got this:    </p>
  
  <pre><code>&lt;h1 id="test" class="test"&gt;
  </code></pre>
  
  <p>and in a script part this:</p>
  
  <pre><code>alert($('#test').id)
  alert($('.test').id)
  </code></pre>
  
  <p>jQuery is definitely loaded. But I get <em>undefined</em> in the alert box - both times. If I use the regular <em>getElementById</em>, it works and shows <em>test</em>.</p>
  
  <p>What the heck is wrong (with me)</p>
  
  <p>here's an example <a href="http://jsfiddle.net/tF6bd/" rel="nofollow">http://jsfiddle.net/tF6bd/</a></p>