bel>
    <p>
      Put focus in the text box and use the arrow keys:
      <input id="tb4_key_target">
    </p>
    <p>
      Or quick jump to item:
      <span id="tb4_highlight_links">
        <span>0</span> <span>1</span> <span>2</span> <span>3</span>
        <span>4</span> <span>5</span> <span>6</span> <span>7</span>
        <span>8</span> <span>9</span> <span>10</span> <span>11</span>
        <span>12</span> <span>13</span> <span>14</span> <span>15</span>
      </span>
    </p>
    <div id="tb4" class=