var xmlfile = "/wandelwijzer/xml/xml.php";
zoomlevel = 0;
function onLoad() {

 if(document.implementation.hasFeature(
        "http://www.w3.org/TR/SVG11/feature#SVG","1.1")){ 
      _mSvgEnabled = true;
      _mSvgForced  = true;
    }

// Center the map
var map = new GMap2(document.getElementById("map"));
map.setUIToDefault();
map.setCenter(new GLatLng(,), 8);
zoomlevel = 1;



var icon = new GIcon();
icon.image = "http://wandelwijzer.nl/images/icoon.png";
icon.shadow = "http://wandelwijzer.nl/images/schaduw.png";
icon.iconSize = new GSize(25, 38);
icon.shadowSize = new GSize(44, 38);
icon.iconAnchor = new GPoint(6, 38);
icon.infoWindowAnchor = new GPoint(5, 1);





function createMarker(point,text) {
        var marker = new GMarker(point,icon);
        GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml(text);
		  
		   if (zoomlevel == 1) {
    	   map.setCenter(point, 13);
          }
		  
		  
        });
        return marker;
      }

var request = GXmlHttp.create();
request.open("GET", xmlfile, true);
request.onreadystatechange = function() {
  if (request.readyState == 4) {
    var xmlDoc = request.responseXML;



// get points for markers
    var markers = xmlDoc.documentElement.getElementsByTagName("marker");
    for (var i = 0; i < markers.length; i++) {
      var point = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
                             parseFloat(markers[i].getAttribute("lng")));
	  var tag = markers[i].getAttribute("text")
	  var marker = createMarker(point, tag);
      map.addOverlay(marker);
	
    }



	  
}
}

request.send(null);

    }