title: get number of day in javascript date object
body: <pre><code>//27 &lt;- today day number
  new Date().getDay() = new Date().getUTCDay() //&lt;- 5 (friday)? what?
  </code></pre>
  
  <p>Do I have to parse the result with <code>.toString()</code> or use something like <code>YUI.Date.format()</code>?</p>