function load() {
  if (GBrowserIsCompatible()) {
  
      //new map object
    var map = new GMap2(document.getElementById("map"));
      
      //Latitude, Longitude, Zoom-Factor
    map.setCenter(new GLatLng(51.234996,10.654457), 6);

    var bounds = map.getBounds();
    var southWest = bounds.getSouthWest();
    var northEast = bounds.getNorthEast();
    var lngSpan = northEast.lng() - southWest.lng();
    var latSpan = northEast.lat() - southWest.lat();
  
      //user interaction
    map.enableScrollWheelZoom();
    map.addControl(new GLargeMapControl());
    map.addControl(new GMapTypeControl());
  
      //specify office location - Potsdam, Frankfurt/Main  
      //point with latitude and longitude data
    var pointP = new GLatLng(52.403793,13.060534);
    var pointF = new GLatLng(50.102483,8.6558);
  
    var markerP = new GMarker(pointP);
    var markerF = new GMarker(pointF);
    
      //information text (opens when marker is clicked)
    var messageP = "<h1>arlanis Software AG</h1><p>Kurfürstenstrasse 15, D-14467 Potsdam</p>";
    var messageF = "<h1>arlanis Software AG</h1><p>Mannheimerstrasse 97, D-60327 Frankfurt</p>";
    
      //create and add eventListener to points/markers
    GEvent.addListener(markerP, "click", function() {
      map.openInfoWindowHtml(pointP, messageP);
    });
    GEvent.addListener(markerF, "click", function() {
      map.openInfoWindowHtml(pointF, messageF);
    });

      //add marker to map
    map.addOverlay(markerP);
    map.addOverlay(markerF); 
  }
}