function initialize() {
      if (GBrowserIsCompatible()) {
	var canvas = document.getElementById("map_canvas");
	if (canvas == null) return;
        
	//var point= new GLatLng(51.5011427433163, -0.10414481163024902);
	var point= new GLatLng(51.505591, -0.100336);

	var map = new GMap2(canvas);
	map.addControl(new GLargeMapControl());
	map.addControl(new GMapTypeControl());
	map.setCenter(point, 15);

	var info = "<span><b>We are here:</b><br />The entrance is opposite the Blue Fin Building.<br />3 mins. walk from Southwark Tube Station.<br />5-8 mins. from Waterloo.</span>";

	var marker = new GMarker(point);
	GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml(info);
        });
	map.addOverlay(marker);
      }
}