function load() {

if (GBrowserIsCompatible()) {
      function createMarker(point,html) {
        var marker = new GMarker(point);
        GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml(html);
        });
        return marker;
      }
	    var map = new GMap2(document.getElementById("map"));
        map.setCenter(new GLatLng(51.811825,0.157392), 15);
		map.addControl(new GLargeMapControl());
		map.addControl(new GOverviewMapControl());
		map.addControl(new GScaleControl());
		
		var point = new GLatLng(51.812418, 0.159507);
        var marker = createMarker(point,'<b>Officevision UK</b><br />Allen House, The Maltings<br />Hertfordshire, CM21 9JX<br /><br />Tel. 01279 6000 66')
        map.addOverlay(marker);

      }
}