/code>, <code>itemover</code>, <code>itemout</code>. The callback function is invoked as <code>callback(properties)</code>, where <code>properties</code> is an object containing event specific properties. See section <a href="#Events">Events for more information</a>.</td>
    </tr>

    <tr>
      <td>off(event, callback)</td>
      <td>none</td>
      <td>Remove an event listener created before via function <code>on(event, callback)</code>. See section <a href="#Events">Events for more information</a>.</td