="clickOnEnter(event,3);"/>
    <input type='button' id='btn3' onclick='addKeyboard(3);' value='Add' />

    <h3><a href="./">Return to testing home page</a></h3>
  </div>

  </body>

  <!--
    *** DEVELOPER NOTE -- FIREFOX CONFIGURATION FOR TESTING ***
    *
    * If the URL bar starts with <b>file://</b>, Firefox may not load the font used
    * to display the special characters used in the On-Screen Keyboard.
    *
    * To work around this Firefox bug, navigate to <b>about:config</b>
    * and set <b>s