map_toolbar.html

    <div id="main_toolbar">
      <form id="charts_form" method="post">
        <select id="menu_pulldown" class="mapChartsButton" onChange="changeMapType()">
          <optgroup label="VFR">
            <option value="sec">Sectional</option>
            <option value="tac">Terminal</option>
            <option value="wac">WAC</option>
          </optgroup>
          <optgroup label="IFR">
            <option value="enrl">Low IFR</option>
            <option value="enrh">High IFR</option>
          </optgroup>
          <optgroup label="Google">
            <option value="roadmap">Roadmap</option>
            <option value="hybrid">Satellite</option>
            <option value="terrain">Terrain</option>
            <option value="Contrast">Contrast</option>            
          </optgroup>
        </select>
      </form>
    </div>