//<![CDATA[

    if (GBrowserIsCompatible()) {
      // this variable will collect the html which will eventualkly be placed in the sidebar
      var sidebar_html = "";
    
      // arrays to hold copies of the markers and html used by the sidebar
      // because the function closure trick doesnt work there
      var gmarkers = [];
      var htmls = [];
      var i = 0;
      // arrays to hold variants of the info window html with get direction forms open
      var to_htmls = [];
      var from_htmls = [];


      // A function to create the marker and set up the event window
      function createMarker(point,name,html) {
        var marker = new GMarker(point);

        // The info window version with the "to here" form open
        to_htmls[i] = html + '<br>Directions: <b>To here</b> - <a href="javascript:fromhere(' + i + ')">From here</a>' +
           '<br>Start address:<form action="http://maps.google.com/maps" method="get" target="_blank">' +
           '<input type="text" SIZE=40 MAXLENGTH=40 name="saddr" id="saddr" value="" /><br>' +
           '<INPUT value="Get Directions" TYPE="SUBMIT">' +
           '<input type="hidden" name="daddr" value="' +
           point.y + ',' + point.x + "(" + name + ")" + '"/>';
        // The info window version with the "to here" form open
        from_htmls[i] = html + '<br>Directions: <a href="javascript:tohere(' + i + ')">To here</a> - <b>From here</b>' +
           '<br>End address:<form action="http://maps.google.com/maps" method="get"" target="_blank">' +
           '<input type="text" SIZE=40 MAXLENGTH=40 name="daddr" id="daddr" value="" /><br>' +
           '<INPUT value="Get Directions" TYPE="SUBMIT">' +
           '<input type="hidden" name="saddr" value="' +
           point.y + ',' + point.x + "(" + name + ")" + '"/>';
        // The inactive version of the direction info
        html = html + '<br>Directions: <a href="javascript:tohere('+i+')">To here</a> - <a href="javascript:fromhere('+i+')">From here</a>';

        GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml('<div id="infowindow">'+html+'</div>');
        });
        // save the info we need to use later for the sidebar
        gmarkers[i] = marker;
        htmls[i] = html;
        // add a line to the sidebar html
        sidebar_html += '<div class="sidebaritem"><a href="javascript:myclick(' + i + ')">' + name + '</a></div>';
        i++;
        return marker;
      }


      // This function picks up the click and opens the corresponding info window
      function myclick(i) {
        gmarkers[i].openInfoWindowHtml('<div id="infowindow">'+htmls[i]+'</div>');
      }
      // functions that open the directions forms
      function tohere(i) {
        gmarkers[i].openInfoWindowHtml('<div id="infowindow">'+ to_htmls[i]+'</div>');
      }
      function fromhere(i) {
        gmarkers[i].openInfoWindowHtml('<div id="infowindow">'+ from_htmls[i] +'</div>');
      }


      // create the map
		var map = new GMap(document.getElementById("map"));
		map.addControl(new GSmallMapControl());
		map.addControl(new GMapTypeControl());
		map.centerAndZoom(new GPoint(-87.951227,42.272883), 5);

      // Read the data from data.xml
      var request = GXmlHttp.create();
      request.open("GET", "data.xml", true);
      request.onreadystatechange = function() {
        if (request.readyState == 4) {
          var xmlDoc = request.responseXML;
          // obtain the array of markers and loop through it
          var markers = xmlDoc.documentElement.getElementsByTagName("marker");
          
          for (var i = 0; i < markers.length; i++) {
            // obtain the attribues of each marker
            var lat = parseFloat(markers[i].getAttribute("lat"));
            var lng = parseFloat(markers[i].getAttribute("lng"));
            var point = new GPoint(lng,lat);
            var html = markers[i].getAttribute("html");
            var label = markers[i].getAttribute("label");
            // create the marker
            var marker = createMarker(point,label,html);
            map.addOverlay(marker);
          }
          // put the assembled sidebar_html contents into the sidebar div
          document.getElementById("sidebarmap").innerHTML = sidebar_html;
        }
      }
      request.send(null);
    }

    else {
      alert("Sorry, the Google Maps API is not compatible with this browser");
    }
    // This Javascript is based on code provided by the
    // Blackpool Community Church Javascript Team
    // http://www.commchurch.freeserve.co.uk/   
    // http://www.econym.demon.co.uk/googlemaps/

    //]]>