function loadMap() {
       if (GBrowserIsCompatible()) {
         
         
         //var map = new GMap2(document.getElementById('map_canvas'));
          var map = new GMap2(document.getElementById("map_canvas"),{mapTypes: [G_NORMAL_MAP,G_SATELLITE_MAP,G_HYBRID_MAP]});
          
          // momentalne nastaveny souradnice irska 49.219680,18.732475
          //map.setCenter(new GLatLng(49.219680, 18.732475), 16);
         
 
          // nastaveni ovladani
          //map.addControl(new GLargeMapControl());
          var typeMap = map.getMapTypes ();
 
          // prepinani mezi typem mapy NORMAL/SATELIT/HYBRID
          typeMap[0].getName= function() { return "NORMAL";}
          typeMap[1].getName = function() { return "SATELLITE";}
          typeMap[2].getName = function() { return "HYBRID";}
          map.addControl(new GMapTypeControl());

          
          
         var marker = new GMarker(new GLatLng(49.219680, 18.732475));


         map.setCenter(new GLatLng(49.219680, 18.732475), 15, G_HYBRID_MAP);
         map.addControl(new GLargeMapControl());
         map.addOverlay(marker);
         //marker.openInfoWindowHtml(html); 
       }
    };