title: Using query string parameters with google maps api v3 services
body: <p>Im trying to pass strings with the label parameter to the directions renderer. with no luck.
  It seem to ignore any string parameters I try to pass through my array. I know I could use something other then the array. But I prefer it because it make it easy for me to update it.</p>
  
  <pre><code>function include(filename)
  {
      var head = document.getElementsByTagName('head')[0];
  
      script = document.createElement('script');
      script.src = filename;
      script.type = 'text/javascript';
  
      head.appendChild(script)
  }
  
  
  include('geoxml3.js');
  include('v3_epoly.js');
  
    var geoXml = null;
      var map = null;
      var geocoder = null;
      var toggleState = 1;
      var infowindow = null;
      var marker = null;
      var Ploc = null;
      var directionDisplay;
      var directionsService = new google.maps.DirectionsService();
  //Voting Locations: Array element id = voting pct!
      var Vloc = new Array();
          Vloc[1] = '3790 S Houston St Kaufman tx 75142 (Kaufman County Library)';
          Vloc[2] = '6787 FM 741 Hartland tx 75126 (community center)';
          Vloc[3] = '7865 W Lewis FM 3039 Crandall tx 75114(School admin)';
          Vloc[4] = '678 fm 1895 kemp 75147 (Billlock church)';  
  
  
  function initialize() {
      directionsDisplay = new google.maps.DirectionsRenderer();  
      geocoder = new google.maps.Geocoder();
      infowindow = new google.maps.InfoWindow({size: new google.maps.Size(150,50)}); 
      var latlng = new google.maps.LatLng(32.5890, -96.308871);
  
      var myOptions = {
        zoom: 10,
        center: latlng,
        mapTypeControl: true,
          mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU},
          navigationControl: true,
          mapTypeId: google.maps.MapTypeId.ROADMAP
      }
  
  
       map = new google.maps.Map(document.getElementById('map_canvas'),
          myOptions);
      directionsDisplay.setMap(map);
      directionsDisplay.setPanel(document.getElementById('directionsPanel')); 
      geoXml = new geoXML3.parser({
          map: map,
          suppressInfoWindows: true,
          polygonOptions: {clickable: false} 
          });
      geoXml.parse('qvote.kml');
      // exml = new EGeoXml({map: map, singleInfoWindow: true, createpolygon: createPoly});
    }
  
  function showAddress(address) {
      var contentString = '';
      Ploc = null;
      geocoder.geocode( { 'address': address}, function(results, status) {
          if (status == google.maps.GeocoderStatus.OK) {
        var point = results[0].geometry.location;
            map.setCenter(point);
            if (marker &amp;&amp; marker.setMap) marker.setMap(null);
            marker = new google.maps.Marker({
                map: map, 
                position: point,
            });
          for (var i=0; i&lt;geoXml.docs[0].gpolygons.length; i++) {
            if (geoXml.docs[0].gpolygons[i].Contains(point)) {
              contentString = address+'&lt;br&gt;'+geoXml.docs[0].placemarks[i].name;
      //      contentString += '&lt;br&gt;'+point+'&lt;br&gt;polygon#'+i;
              Ploc = geoXml.docs[0].placemarks[i].name;
              i = 999; 
            }
          }
  
          google.maps.event.addListener(marker, 'click', function() {
          infowindow.setContent(contentString); 
          infowindow.open(map,marker);
          if (Ploc) calcRoute(address);
          });
      google.maps.event.trigger(marker,'click');
        } else {
          alert('Geocode was not successful for the following reason: ' + status);
        }
      });
  }
  function calcRoute(addy) {
    var start = addy;
    var end = Vloc[parseInt(Ploc)];
    var request = {
      origin:start, 
      destination:end,
      travelMode: google.maps.DirectionsTravelMode.DRIVING
    };
    directionsService.route(request, function(response, status) {
      if (status == google.maps.DirectionsStatus.OK) {
        directionsDisplay.setDirections(response);
      }
    });
  }
  
  google.setOnLoadCallback(initialize);
  </code></pre>