function html_entity_decode(str)
{
    try
	{
		var  tarea=document.createElement('textarea');
		tarea.innerHTML = str; return tarea.value;
		tarea.parentNode.removeChild(tarea);
	}
	catch(e)
	{
		//for IE add <div id="htmlconverter" style="display:none;"></div> to the page
		document.getElementById("htmlconverter").innerHTML = '<textarea id="innerConverter">' + str + '</textarea>';
		var content = document.getElementById("innerConverter").value;
		document.getElementById("htmlconverter").innerHTML = "";
		return content;
	}
}

var mapa;
		
		function dodajMarker(lat,lon,ikona_url,nazwa,geturl)
		{
		
			var ikona = new GIcon();
			ikona.image = ikona_url;
			ikona.iconSize = new GSize(29, 38);
			ikona.iconAnchor = new GPoint(15, 38);
			ikona.shadow = "gfx/shadow50.png";
			ikona.infoWindowAnchor = new GPoint(34,4);			 
			
			var marker	=	new GMarker(new GLatLng(lat,lon),{icon: ikona});
			marker.txt	=	html_entity_decode(nazwa);
			marker.geturl	=	geturl;
			
			mapa.addOverlay(marker);
						
			GEvent.addListener(marker,"click",function()
			{
				marker.openInfoWindowHtml(marker.txt);
 				
			});						
						
			
			return marker;
		}
		
		function mapaStart()
		{
			if(GBrowserIsCompatible())  
			{
				mapa = new GMap2(document.getElementById("gMapsBig"),{mapTypes: [G_NORMAL_MAP,G_SATELLITE_MAP,G_HYBRID_MAP]});
				mapa.setCenter(new GLatLng(49.723338,19.382039),14);  
				
				// kontrolki mapy
				var typyMapy = mapa.getMapTypes();    
				typyMapy[0].getName= function() { return "Mapa";}  
				typyMapy[1].getName = function() { return "Satelita";}  
				typyMapy[2].getName = function() { return "Hybryda";}  	
				
				var topLeft = new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(10,10));
				var topRight = new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(10,10));
				
				mapa.addControl(new GLargeMapControl3D(), topLeft);
				mapa.addControl(new GMapTypeControl(), topRight);
				mapa.enableDoubleClickZoom();
   				mapa.enableContinuousZoom();
   				mapa.enableScrollWheelZoom();	
				
				GDownloadUrl('xml/gmaps.php', function(dane,kodOdpowiedzi)
				{
					if(kodOdpowiedzi==200)
					{
						var xml = GXml.parse(dane);
						var markery = xml.documentElement.getElementsByTagName("marker");
						for(var i=0; i<markery.length; i++)
						{
							var lat			=	parseFloat(markery[i].getAttribute("lat"));
							var lon			=	parseFloat(markery[i].getAttribute("lon"));
							var ikona_url	=	markery[i].getAttribute("ikona");
							var nazwa		=	markery[i].getAttribute("nazwa");
							var geturl		=	markery[i].getAttribute("geturl");
							var marker		=	dodajMarker(lat,lon,ikona_url,nazwa,geturl);
						}
						
					}
					else
					{
						//alert('Błąd wczytywania pliku XML');
					}
				});
			}
		}