var markerGroups = { "nso": [], "kdv": [], "vso": []};
var type;
function createMarker(obj,html,type,icon){
			var icon = new GIcon();
			icon.image = 'gfx/marker/'+ type +'/image.png';
			icon.shadow = 'gfx/marker/shadow.png';
			icon.iconSize = new GSize(26,26);
			icon.shadowSize = new GSize(42,26);
			icon.iconAnchor = new GPoint(13,26);
			icon.infoWindowAnchor = new GPoint(13,26);
			icon.printImage = 'gfx/markers/'+ type +'/image.png';
			icon.mozPrintImage = 'gfx/markers/'+ type +'/image.png';
			icon.printShadow = 'gfx/markers/printShadow.png';
			icon.imageMap = [25,0,25,1,25,2,25,3,25,4,25,5,25,6,25,7,25,8,25,9,25,10,25,11,25,12,25,13,25,14,25,15,25,16,25,17,25,18,25,19,25,20,25,21,25,22,25,23,25,24,25,25,0,25,0,24,0,23,0,22,0,21,0,20,0,19,0,18,0,17,0,16,0,15,0,14,0,13,0,12,0,11,0,10,0,9,0,8,0,7,0,6,0,5,0,4,0,3,0,2,0,1,0,0,25,0];
			
			var marker = new GMarker(obj,icon);
			markerGroups[type].push(marker);
			
			GEvent.addListener(marker, "click", function() {
					window.open(html,'_self')					
					//var link = '/'+html;
					//window.open(html,'_self');
					
				});
			
			return marker;
		 }
	 
	 
		function load() {
			
				  if (GBrowserIsCompatible()) {
					var map = new GMap2(document.getElementById("map"));
										//map.addControl(new GLargeMapControl());
					//map.addControl(new GSmallMapControl());
								

					//create randomnumber and retrieve xml file
					var randomnumber=Math.floor(Math.random()*11111);
					GDownloadUrl("kml.php?random="+randomnumber, function(data, responseCode) {
					var xml = GXml.parse(data);
					
					//store markers in markers array
					var markers = xml.documentElement.getElementsByTagName("marker");
					
										
					//loop over the markers array
					for (var i = 0; i < markers.length; i++) {
						var lat = parseFloat(markers[i].getAttribute("lat"));
						var lng = parseFloat(markers[i].getAttribute("lng"));
						var point = new GLatLng(lat,lng);
						var html = markers[i].getAttribute("lnk");						
						var type = markers[i].getAttribute("kind"); 
						
						map.setCenter(new GLatLng(52.38200, 4.64100), 13);				
											
						var marker = createMarker(point,html,type);
						map.addOverlay(marker);
						
					} //close for loop

						  }
						); //close GDownloadUrl
				  } //close GBrowserIsCompatible
			} //close load
			
	$(document).ready(function(){
		$('.locate label [type=checkbox]').click(function(){
			  type = $(this).val(); 
			  for (var i = 0; i < markerGroups[type].length; i++) {
				var marker = markerGroups[type][i];
				if ($(this).is(':checked')) {
				  marker.show();
				} else {
				  marker.hide();
				}
			  } 
		  });
    });