   <h1>Horizontal Blocks</h1>
    <p>
      <a href="javascript:void(workspace.setVisible(true))">Show</a>
      - <a href="javascript:void(workspace.setVisible(false))">Hide</a>
    </p>

    <form id="options">
        <select name="dir" onchange="document.forms.options.submit()">
          <option value="ltr">LTR</option>
          <option value="rtl">RTL</option>
        </select>
        <select name="toolbox" onchange="document.forms.options.submit()">
          <option value="categories">Categories</