function createMarker(point,html) {
        var marker = new GMarker(point);
        GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml(html);
        });
        return marker;
      }

    function load() {
      if (GBrowserIsCompatible()) {
        var map = new GMap2(document.getElementById("map"));
		 map.addControl(new GLargeMapControl3D());
		 map.addControl(new GMapTypeControl());
	  var point = new GLatLng(51.374323,-1.005231);
		map.setCenter(point, 12);
      
	  
      var marker = createMarker(point,'Trunkwell Mansion House')
      map.addOverlay(marker);
		}
    }