function initialize() {
    var lat=52.173931692568;
    var lng=18.8525390625;
    var zoom=6;

    if (GBrowserIsCompatible()) {

      var map = new GMap2(document.getElementById("map"));
      map.addControl(new GLargeMapControl());
      map.addControl(new GMapTypeControl());
      map.setCenter(new GLatLng(lat, lng), zoom);
      var startx;
      var starty;
      if(parseFloat(document.getElementById("Glat").value) > 0 ){
        startx = parseFloat(document.getElementById("Glat").value);
      }
      else{
        startx = 0;
      }
      
      if(parseFloat(document.getElementById("Glng").value) > 0){
        starty = parseFloat(document.getElementById("Glng").value);
      }
      else{
        starty = 0;
      }
	      var icon = new GIcon();   
	      icon.image = "/images/icons/s_war.gif";   
	      icon.iconSize = new GSize(18, 18);   
	      icon.shadowSize = new GSize(22, 20);   
	      icon.iconAnchor = new GPoint(6, 20);   
	      icon.infoWindowAnchor = new GPoint(5, 1);
	      
		  var point = new GLatLng(startx, starty);
		  var marker = new GMarker(point,icon);
		  map.addOverlay(marker);
		  var formularz = document.getElementById("formularz");
		  formularz.Glng.value = point.x;
		  formularz.Glat.value = point.y;

        GEvent.addListener(map, "click", function(overlay, point) {
           
         if (overlay) {
            map.removeOverlay(overlay);
          formularz.Glng.value = 0;
          formularz.Glat.value = 0;
                
              } else {
                map.clearOverlays();
                map.addOverlay(new GMarker(point, icon));
          formularz.Glng.value = point.x;
          formularz.Glat.value = point.y;
          
            }
        });
     
        }   
    }