t color. The icon will be 21 px wide by 34 high, have an origin
      // of 0, 0 and be anchored at 10, 34).
      function makeMarkerIcon(markerColor) {
        var markerImage = new google.maps.MarkerImage(
          'http://chart.googleapis.com/chart?chst=d_map_spin&chld=1.15|0|'+ markerColor +
          '|40|_|%E2%80%A2',
          new google.maps.Size(21, 34),
          new google.maps.Point(0, 0),
          new google.maps.Point(10, 34),
          new google.maps.Size(21,34));
        return markerIma