        <input type="button" value="&darr;" onclick="adjustBottom(-1)" />
        </p>
        <p>
          Min X Axis:
          <input type="button" value="&larr;" onclick="adjustFirst(-100000000)" />
          <input type="button" value="&rarr;" onclick="adjustFirst(+100000000)" />
        </p>
        <p>
          Max X Axis:
          <input type="button" value="&larr;" onclick="adjustLast(-100000000)" />
          <input type="button" value="&rarr;" onclick="adjustLast(+100000000)" />
        </p>
 