function initialize() {
      if (GBrowserIsCompatible()) {
        var map = new GMap2(document.getElementById("map_canvas"));
        map.setCenter(new GLatLng(37.201808451440606, -93.28654289245605), 12);
        map.addControl(new GLargeMapControl());
        map.addControl(new GMapTypeControl());

      }
    }
    
window.onload = initialize;
window.onunload = GUnload;