var map = new GMap2(document.getElementById("map"));
  map.addControl(new GSmallMapControl());
  map.addControl(new GMapTypeControl());
  map.setCenter(new GLatLng(51.179045, -1.826752), 14); 

  var point = new GLatLng(51.17904, -1.826752);
  var marker = new GMarker(point);
  GEvent.addListener(marker, "click", function() {
    var content = "<h1>Stonehenge, England</h1><p>Stonehenge was built around 2500B</p>";
    content += "<a href='http://www.example.com?view=abc&state=123'>Link to Maps API Version</a>";
    marker.openInfoWindowHtml(content);
  });
  map.addOverlay(marker);