function initialize() {
  var map = new GMap2(document.getElementById("map_canvas"));
  map.setCenter(new GLatLng(53.344104,-6.267494), 14);
  map.setMapType(G_PHYSICAL_MAP);
  
  var point = new GLatLng(38.693281,-75.075159);
  map.addOverlay(new GMarker(point));
  }

/*Google Maps API V3  
function initialize() {
    var centerLng = new google.maps.LatLng(38.693482,-75.057564);
    var myOptions = {
      zoom: 8,
      center: centerLng,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var map = new google.maps.Map(document.getElementById("map_canvas"),
        myOptions);
      
    var markerLng = new google.maps.LatLng(38.693281,-75.075159);
    var marker = new google.maps.Marker({
      position: markerLng, 
      map: map, 
      title:"Hello World!"
  }
*/