ntent</code>. See section <a href="#Templates">Templates</a> for a detailed explanation.</td>
    </tr>

    <tr>
      <td>visibleFrameTemplate</td>
      <td>function</td>
      <td>none</td>
      <td>A template function used to generate the visible frame of the items. The function is called by the Timeline with an items' data as the first argument and the item frame element as the second, and must return HTML code, a string or a template as result. When the option template is specified, the items do not