function initialize() {
  if (GBrowserIsCompatible()) {
    var map = new GMap2(document.getElementById("map_canvas"));
    var center = new GLatLng(40.463255, -78.427123);
    map.setCenter(center, 13);
	map.addControl(new GSmallMapControl());

	var customIcon = new GIcon(G_DEFAULT_ICON)
	customIcon.image = "_etc/images/icon.png";
	customIcon.iconSize = new GSize(64, 64);
	customIcon.shadowSize = new GSize(0, 0);
	customIcon.iconAnchor = new GPoint(32, 54);
	markerOptions = { icon:customIcon, clickable:false};
	
    var marker = new GMarker(center,markerOptions);
    map.addOverlay(marker);
  }
}