function initialize() {
      if (GBrowserIsCompatible()) {
        var map = new GMap2(document.getElementById("map_canvas"));
        var center = new GLatLng(51.758451, 7.38867);
        map.setCenter(center, 11);

        var marker = new GMarker(center, {draggable: true});

        GEvent.addListener(marker, "dragstart", function() {
          map.closeInfoWindow();
        });

        GEvent.addListener(marker, "dragend", function() {
          marker.openInfoWindowHtml("Just bouncing along...");
        });
		GEvent.addListener(marker, "click", function() {
            //marker.openInfoWindowHtml('Hier gehts zum <a href="http://maps.google.de/maps?f=q&hl=de&geocode=&q=An+den+K%C3%A4mpen+50,+59348+L%C3%BCdinghausen&sll=51.151786,10.415039&sspn=13.634062,39.550781&ie=UTF8&ll=51.758451,7.38867&spn=0.006561,0.019312&z=16&iwloc=addr&iwstate1=dir" target="_blank">Routenplaner</a>');
			location.href="http://maps.google.de/maps?f=q&hl=de&geocode=&q=An+den+K%C3%A4mpen+50,+59348+L%C3%BCdinghausen&sll=51.151786,10.415039&sspn=13.634062,39.550781&ie=UTF8&ll=51.76614,7.388649&spn=0.104749,0.30899&z=12&iwloc=addr&iwstate1=dir";
		});
		
        map.addOverlay(marker);

      }
    }