function initialize() {
  var map;
  if (GBrowserIsCompatible()) {
    map = new GMap2(document.getElementById("map_canvas"));
    map.addControl(new GSmallMapControl());
    map.addControl(new GMapTypeControl());

    map.setCenter(new GLatLng(-44.681897, 169.05942), 13);
    
	var parkIcon = new GIcon(G_DEFAULT_ICON);
	parkIcon.image = "http://www.newzealandtravelinsider.com/images/park.png";
	var locIcon = new GIcon(G_DEFAULT_ICON);
	locIcon.image = "http://www.newzealandtravelinsider.com/images/flag.png";
	                
	markerOptions1 = { icon:locIcon };
	var waterfallMarker = new GMarker(new GLatLng(-44.694834, 169.049206), markerOptions1);
    map.addOverlay(waterfallMarker);
    GEvent.addListener(waterfallMarker, "click", function() {
	    waterfallMarker.openInfoWindowHtml("The summit of Mount Roy at 1,578 meters.");
	  });
	
	markerOptions2 = { icon:parkIcon };
    var parkingMarker = new GMarker(new GLatLng(-44.67317, 169.071779), markerOptions2);        
    map.addOverlay(parkingMarker);
    GEvent.addListener(parkingMarker, "click", function() {
	    parkingMarker.openInfoWindowHtml('Parking lot for the Roys Peak Track in Wanaka.');
	  });

    map.setMapType(G_PHYSICAL_MAP);        
	} 
}