// JavaScript Document
     var customIcons = {
      red: {
        icon: 'images/redmarker.png',
        shadow: 'images/shadow_marker.png'
      },
      green: {
        icon: 'images/grmarker.png',
        shadow: 'images/shadow_marker.png'
      },
      amber: {
        icon: 'images/yellmarker.png',
        shadow: 'images/shadow_marker.png'
      },	  
      pin: {
        icon: 'images/pinmarker.png',
        shadow: 'images/shadow_marker.png'
      },
      cyan: {
        icon: 'images/cyanmarker.png',
        shadow: 'images/shadow_marker.png'
      },	  
	  white: {
        icon: 'images/whitemarker.png',
        shadow: 'images/shadow_marker.png'
      }
    };

    function load() {
      var map = new google.maps.Map(document.getElementById("map"), {
        center: new google.maps.LatLng(65.5, 18),
        zoom: 5,
        mapTypeId: 'roadmap'
      });
	   
	   map.enableKeyDragZoom({
          visualEnabled: true,
          visualPosition: google.maps.ControlPosition.LEFT,
          visualPositionOffset: new google.maps.Size(35, 0),
          visualPositionIndex: null,
          visualSprite: "../images/dragzoom_btn.png",
          visualSize: new google.maps.Size(20, 20),
          visualTips: {
            off: "Drag zoom on",
            on: "Drag zoom off"
          },
		  key: "shift",
          boxStyle: {
            border: "2px dashed black",
            backgroundColor: "transparent",
            opacity: 1.0
          },
          veilStyle: {
            backgroundColor: "green",
            opacity: 0.35,
            cursor: "crosshair"
          }
        });
	   
	
	  
      var infoWindow = new google.maps.InfoWindow;
      

      // Change this depending on the name of your PHP file
      downloadUrl("tunnels_genxml.php", function(data) {
        var xml = data.responseXML;
        var markers = xml.documentElement.getElementsByTagName("marker");
        for (var i = 0; i < markers.length; i++) {
          var name = markers[i].getAttribute("name");
          var district = markers[i].getAttribute("district");
          var type = markers[i].getAttribute("type");
          var road = markers[i].getAttribute("road");
			var length = markers[i].getAttribute("length");
			var lighting = markers[i].getAttribute("lighting");
			var comments = markers[i].getAttribute("comments");
			var image = markers[i].getAttribute("image");
			var altroute = markers[i].getAttribute("altroute");
			var moreinfo = markers[i].getAttribute("moreinfo");
			var moreinfolink = markers[i].getAttribute("moreinfolink");
			var contributor = markers[i].getAttribute("contributor");
			var url = markers[i].getAttribute("url");
			var balimg = markers[i].getAttribute("balimg");
			var photo = markers[i].getAttribute("photo");
			var photolink = markers[i].getAttribute("photolink");
          var point = new google.maps.LatLng(
              parseFloat(markers[i].getAttribute("lat")),
              parseFloat(markers[i].getAttribute("lng")));
          var html = "<div><p class='infowindow'><img src=" + balimg + " width=50 height=50 hspace=10 vspace=10 align='right'><b>Name: " + name + "</b> <br/>Route: " + road + "</b> <br/>Length: " + length + "</b> <br/>Lighting: " + lighting + "<br/><b>Comments : </b>" + comments + "<br/><b>Alternative route : </b>" + altroute + "<br/><b>Additional info. : </b><a href=" + moreinfolink + " target='_blank'>" + moreinfo + "</a><br/><b>Contributor : </b><a href=" + url + " target='_blank'>" + contributor + "</a><br/><a href=" + photolink + " target='_blank'><img src=" + image + " width=230 height=173 hspace=10 vspace=10 border='0'></a><br/><p class='tunnelphotocredit'>Photo : " + photo + "</p></div>";
          var icon = customIcons[type] || {};
          var marker = new google.maps.Marker({
            map: map,
            position: point,
            icon: icon.icon,
            shadow: icon.shadow
          });
          bindInfoWindow(marker, map, infoWindow, html);
        }
      });
    }

    function bindInfoWindow(marker, map, infoWindow, html) {
      google.maps.event.addListener(marker, 'click', function() {
        infoWindow.setContent(html);
        infoWindow.open(map, marker);
      });
    }

    function downloadUrl(url, callback) {
      var request = window.ActiveXObject ?
          new ActiveXObject('Microsoft.XMLHTTP') :
          new XMLHttpRequest;

      request.onreadystatechange = function() {
        if (request.readyState == 4) {
          request.onreadystatechange = doNothing;
          callback(request, request.status);
        }
      };

      request.open('GET', url, true);
      request.send(null);
    }

    function doNothing() {}