GMapLoader = new Object({
	mapId: null,
	mapWindow: null,
	source: null,
	map: null,
	markers: null,
	goeCoder: null,
	icons: null,
	markers: null,
	xml: null,
	defaultZoom: 13,
	load: function(map, source)
	{
		if (GBrowserIsCompatible()) {
			this.source = source;
			this.map = map;
	        this.geocoder = new GClientGeocoder();
 	        this.loadData();
		}
	},
	sleep: function(timeout) {
        var loop = true;
        var current = new Date();
        var now;
        var cTimestamp = current.getTime();

        while(loop) {
            now = new Date();
            nTimestamp = now.getTime();

            if(nTimestamp - cTimestamp > timeout) {
                    loop = false;
            }
        }

	},
	unload: function()
	{
		GUnload();
	},
	loadData: function()
	{
		var mapObj = this;
		GDownloadUrl(this.source, function(data) {
				mapObj.xml = GXml.parse(data);
				mapObj.loadMap();
				mapObj.loadIcons();
				mapObj.loadMarkers();
			}
		);
	},	
	loadMap: function()
	{
		if ( this.xml != null ) 
		{
			var xmlMaps = this.xml.documentElement.getElementsByTagName("map");
			var xmlMap = xmlMaps.item(0);
			if (  xmlMap.getAttribute("defaultZoom") != null &&  xmlMap.getAttribute("defaultZoom") != 'undefined')
				this.defaultZoom = parseInt(xmlMap.getAttribute("defaultZoom"));
		    if ( xmlMap.getAttribute("address") != null && xmlMap.getAttribute("address") != 'undefined' )
		    {
		    	var mapper = this;
		        this.geocoder.getLocations(xmlMap.getAttribute("address"), 
			        function(response)
					{
						if (response && response.Status.code == 200) 
							mapper.map.setCenter(new GLatLng(response.Placemark[0].Point.coordinates[1], response.Placemark[0].Point.coordinates[0]), mapper.defaultZoom);
					}
				);
			}
			else if ( xmlMap.getAttribute("lat") != null && xmlMap.getAttribute("lng") != null )
		        this.map.setCenter(new GLatLng(xmlMap.getAttribute("lat")),new GLatLng(xmlMap.getAttribute("lng")), this.defaultZoom);
		    else
				this.map.setCenter(new GLatLng(0, 0), this.defaultZoom);
			if ( xmlMap.getAttribute("smallMapControl") != null && xmlMap.getAttribute("smallMapControl") != 'undefined' && xmlMap.getAttribute("smallMapControl") != 0 )
				this.map.addControl(new GSmallMapControl());
    		if ( xmlMap.getAttribute("mapTypeControl") != null && xmlMap.getAttribute("mapTypeControl") != 'undefined' && xmlMap.getAttribute("mapTypeControl") != 0 )
				this.map.addControl(new GMapTypeControl());
			
        }
	},
	loadIcons: function()
	{
		if ( this.xml != null ) 
		{
			var xmlIcons = this.xml.documentElement.getElementsByTagName("icon");
			this.icons = [];
			for (var i = 0; i < xmlIcons.length; i++) 
			    if ( xmlIcons.item(i).hasChildNodes() )
			    {
			   		var icon = new GIcon(); 

			   		for ( var j = 0; j < xmlIcons.item(i).childNodes.length; j++ )
			   		{
			    		if ( xmlIcons.item(i).childNodes[j].tagName == 'image' )
			    		{
			    			icon.image = xmlIcons.item(i).childNodes[j].getAttribute("src");
			    			icon.iconSize = new GSize(
				    			xmlIcons.item(i).childNodes[j].getAttribute("width"), 
				    			xmlIcons.item(i).childNodes[j].getAttribute("height")
			    			);
			    		}
			    		else if ( xmlIcons.item(i).childNodes[j].tagName == 'shadow' )
			    		{
			    			icon.shadow = xmlIcons.item(i).childNodes[j].getAttribute("src");
			    			icon.shadowSize = new GSize(
				    			xmlIcons.item(i).childNodes[j].getAttribute("width"), 
				    			xmlIcons.item(i).childNodes[j].getAttribute("height")
			    			);
			    		}
			    		else if ( xmlIcons.item(i).childNodes[j].tagName == 'iconAnchor' )
			    		{
			    			icon.iconAnchor = new GPoint(			    			
			    				xmlIcons.item(i).childNodes[j].getAttribute("x"), 
				    			xmlIcons.item(i).childNodes[j].getAttribute("y")
				    		);
			    		}
			    		else if ( xmlIcons.item(i).childNodes[j].tagName == 'infoWindowAnchor' )
			    		{
			    			icon.infoWindowAnchor = new GPoint(			    			
			    				xmlIcons.item(i).childNodes[j].getAttribute("x"), 
				    			xmlIcons.item(i).childNodes[j].getAttribute("y")
				    		);
			    		}
		    		}
			   		this.icons[parseInt(xmlIcons.item(i).getAttribute("id"))] = icon;
				}
		}
	},
	loadMarkers: function()
	{
		if ( this.xml != null ) 
		{
			var xmlMarkers = this.xml.documentElement.getElementsByTagName("marker");
			var mapper = this;
			mapper.next = true;
			for (var i = 0; i < xmlMarkers.length; i++) 
			{
	            var name = xmlMarkers.item(i).getAttribute("name");
	            var address = xmlMarkers.item(i).getAttribute("address");
	            var type = xmlMarkers.item(i).getAttribute("icon");
	            var lat = xmlMarkers.item(i).getAttribute("lat");
	            var lng = xmlMarkers.item(i).getAttribute("lng");
	            var description = xmlMarkers.item(i).firstChild.nodeValue;
	            if ( lat != null && lng != null )
	            {
	            	mapper.createMarkerByPoint(name, lat, lng, description, this.icons[type]);
	            }
	            else 
	            {
	            	mapper.createMarker(name, address, description, this.icons[type]);
	            }
          	}
		}
	},
	createMarkerByPoint:  function(name, x, y, description, icon) {
		mapper = this;
		point = new GLatLng(x, y);
		
		var marker;
		if ( icon != null )
		{
			icon.infoWindowAnchor.x = parseFloat(icon.infoWindowAnchor.x);
			icon.infoWindowAnchor.y = parseFloat(icon.infoWindowAnchor.y);
		 	marker = new GMarker(point, icon);
		}
		else
			marker = new GMarker(point);
			
		GEvent.addListener(marker , 'click', function() {
			marker.openInfoWindowHtml(description);
		});
		mapper.map.addOverlay(marker);

    },
	createMarker:  function(name, address, description, icon) {
		mapper = this;
        mapper.geocoder.getLocations(address, 
			function(response)
			{
				if (response && response.Status.code == 200) {
					place = response.Placemark[0];
					point = new GLatLng(place.Point.coordinates[1], place.Point.coordinates[0]);
					
					var marker;
					if ( icon != null )
					{
						icon.infoWindowAnchor.x = parseFloat(icon.infoWindowAnchor.x);
						icon.infoWindowAnchor.y = parseFloat(icon.infoWindowAnchor.y);
					 	marker = new GMarker(point, icon);
					}
					else
						marker = new GMarker(point);
					
					GEvent.addListener(marker , 'click', function() {
						marker.openInfoWindowHtml(description);
					});
					mapper.map.addOverlay(marker);
				}
			}
		);
    }
}
);