title: Does 'Rect' have a constructor function?
body: <p>I can't seem to find any reference to it in the <a href="https://developer.mozilla.org/en-US/docs/Mozilla/JavaScript_code_modules/Geometry.jsm/Rect#Method_overview" rel="nofollow">Mozilla docs</a>, but is there a public constructor function for the <code>Rect</code> "class"? What arguments does the function take?</p>
  
  <p><strong>Edit:</strong> It seems like trying to call <code>Rect()</code> (with or without parameters) results in a <code>TypeError: Illegal constructor</code>: <a href="http://jsfiddle.net/IQAndreas/a55hG/" rel="nofollow">http://jsfiddle.net/IQAndreas/a55hG/</a></p>