window.addEvent('domready', function() {

    initMap();
});

 // Call this function when the page has been loaded
initMap = function () {
    loadMap("map", 51.511173, -0.1553, 15,
        "<p><strong>Sidhu & Simon Communications</strong><br/>36 Upper Brook Street <br/>Mayfair <br/>London <br/>W1K 7QJ <br/> United Kingdom</p><p>T +44 20 7491 9900<br/>F +44 20 7491 9907</p><p>Email <a href=\"mailto:info@sidhuandsimon.com\">info@sidhuandsimon.com</a>");
  }

loadMap = function(id, lat, lon, zoom, description) {
   if (GBrowserIsCompatible()) {
      var map = new GMap2(document.getElementById(id)); 
      map.setCenter(new GLatLng(lat, lon), zoom); 
      var marker = new GMarker(new GLatLng(lat, lon)); 
      map.addOverlay(marker); 
      marker.openInfoWindowHtml(description); 
      map.addControl(new GSmallMapControl()); 
      }
}