var icon = new GIcon();
  icon.image = "http://labs.google.com/ridefinder/images/mm_20_red.png";
  icon.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
  icon.iconSize = new GSize(12, 20);
  icon.shadowSize = new GSize(22, 20);
  icon.iconAnchor = new GPoint(6, 20);
  icon.infoWindowAnchor = new GPoint(5, 1);

    function load() {
      if (GBrowserIsCompatible()) {
        var map = new GMap2(document.getElementById("map"));
        map.addControl(new GLargeMapControl());
        map.addControl(new GMapTypeControl());
        map.setCenter(new GLatLng(51.3760, 7.7194), 15);

        // Creates a marker at the given point with the given number label
        function createMarker(point) {
          var marker = new GMarker(point, icon);
          GEvent.addListener(marker, "click", function() {
            marker.openInfoWindowHtml("<span style='color : #444444;'>Erl&ouml;serkirche<br><small><br>Hier proben Outta Limits<br>jeden Mittwoch von 20 bis 22 Uhr</small></span>");
          });
          return marker;
        }

        var point = new GLatLng(51.37328, 7.7203);
        map.addOverlay(createMarker(point));
      }
    }