function NovgorodMap(element_id, lat, lng, zoom, onload) {

	this.map_tileserver='https://osm.novgorod.ru/tiles/{z}/{x}/{y}.png';
	this.map_tileattribution='Map data © <a href="http://www.osm.org/">OpenStreetMap</a>';
	this.map=false;

	$('head').append( $('<link rel="stylesheet" type="text/css" />').attr('href', 'https://i.novgorod.ru/jquery/leaflet/leaflet.css') );
	$('head').append( $('<link rel="stylesheet" type="text/css" />').attr('href', 'https://i.novgorod.ru/jquery/leaflet/leaflet.fullscreen.css') );

	var that=this;

	$.getScript('https://i.novgorod.ru/jquery/leaflet/leaflet.js', function() {
		$.getScript('https://i.novgorod.ru/jquery/leaflet/Leaflet.fullscreen.js', function() {


			L.NumberedDivIcon = L.Icon.extend({
				options: {
				    iconUrl: 'https://i.novgorod.ru/map/markers/marker-novgorodru.png',
				    number: '',
				    shadowUrl: null,
				    iconSize: new L.Point(25, 41),
					iconAnchor: new L.Point(13, 41),
					popupAnchor: new L.Point(0, -33),
					className: 'leaflet-div-icon'
				},

				createIcon: function () {
					var div = document.createElement('div');
					var img = this._createImg(this.options['iconUrl']);
					var numdiv = document.createElement('div');
					numdiv.setAttribute ( "class", "number" );
					numdiv.innerHTML = this.options['number'] || '';
					div.appendChild ( img );
					div.appendChild ( numdiv );
					this._setIconStyles(div, 'icon');
					return div;
				},

				createShadow: function () {
					return null;
				}
			});






			if (typeof(lat) === 'undefined') lat=0;
			if (typeof(lng) === 'undefined') lng=0;
			if (typeof(zoom) === 'undefined') zoom=0;

			if (lat==0) lat=58;
			if (lng==0) lng=31;
			if (zoom==0) zoom=13;

			if ($('#'+element_id).length==0) {
				console.log('Map container not found: '+element_id);
				return;
				}

			var southWest = L.latLng(56.73, 27.64), northEast = L.latLng(60.15, 36.27);
			var bounds = L.latLngBounds(southWest, northEast);

			that.map = L.map(element_id, { zoomControl: false, maxZoom:22, maxBoundsViscosity: 100, maxBounds: bounds});
			L.control.zoom({ position:'bottomright'}).addTo(that.map);
			that.map.addControl(new L.Control.Fullscreen({position: 'bottomright'}));
			that.map.setView(new L.LatLng(lat, lng), zoom);

			L.tileLayer(that.map_tileserver, {attribution: that.map_tileattribution, maxZoom:22, maxNativeZoom: 18}).addTo(that.map);


			var that1=that;
			$('#'+element_id).contextmenu( that.makeDoubleRightClickHandler( function(e) {
				that.map.zoomOut();
			}));

			if (typeof onload === 'function') onload(that.map);

		});
	});

	this.makeDoubleRightClickHandler=function(handler) {
	    var timeout = 0, clicked = false;
	    return function(e) {

	        e.preventDefault();

	        if( clicked ) {
	            clearTimeout(timeout);
	            clicked = false;
	            return handler.apply( this, arguments );
	        }
	        else {
	            clicked = true;
	            timeout = setTimeout( function() {
	                clicked = false;
	            }, 300 );
	        }
	    };
	}

	this.getMap = function() {
		return this.map;
	}

}