This is for a bugreport to the codepen.io people: source at http://codepen.io/johan/full/rkeiu

<script src="https://maps.googleapis.com/maps/api/js?sensor=false"></script>

<div>

  <b>Mode of Travel: </b>

  <select id="mode" onchange="calcRoute()">

    <option value="DRIVING">Driving</option>

    <option value="WALKING">Walking</option>

    <option value="BICYCLING">Bicycling</option>

    <option value="TRANSIT">Transit</option>

  </select>

</div>

<div id="map_canvas"></div>

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