title: javascript addEventListener mousedown does not fire
body: <p>A simple <code>MouseEvent</code> setup is somehow not responding..</p>
  
  <pre><code>document.getElementById('container').addEventListener( 'pointerdown', onDown, false); // doesn't fire on safari (as expected)
  document.getElementById('container').addEventListener( 'mousedown', onDown, false); // doesn't fire anywhere!! chrome/firefox/safari
  document.getElementById('container').addEventListener( 'mousemove', onDocumentMouseMove, false); // works fine
  document.getElementById('container').addEventListener( 'mouseup', oneClick, false); // works fine
  document.getElementById('container').addEventListener( 'dblclick', doubleClick, false); // works fine
  </code></pre>
  
  <p>so the issue is with <code>mousedown</code> not working in any browser... I've also tried <code>mousedown()</code> with parenthesis, but still no firing. Very strange or am I missing something supersimple?</p>