function MapInterface(el) {
	this.elmap = el;  // map element
	this.gmap = null; // gmap object
	
  var imageThis = this;
  
	this.deflat = 49.70;   // starting lat.
	this.deflng = 15.514;  // starting long.
	this.defzoom = 8;      // starting zoom

	this.defscrollwheelzoom = true;                              // starting scrollwheel zoom
	
	this.initialize = initialize;
	function initialize() {     
  
          
		if (window.location.hash.length > 0) {
			var args = window.location.hash.substr(1).split('@');
			for (var ti = 0; ti < args.length; ti++) {
				var argpts = args[ti].split('=');
				if (argpts[0] == 'pos') {
					var posa = argpts[1].split('|');
					if (posa.length == 3) {
						this.deflat = parseFloat(posa[0]);
						this.deflng = parseFloat(posa[1]);
						this.defzoom = parseInt(posa[2]);
					}
				}
			}
		}
		
    var mapOptions = {                                                          
      center: new google.maps.LatLng(this.deflat, this.deflng),
      zoom: this.defzoom,
      scaleControl: false,
      scaleControlOptions: {
        position: google.maps.ControlPosition.BOTTOM_LEFT
      },
      zoomControl: false,
      overviewMapControl: false,
      mapTypeControl: false,
      panControl: false,
      streetViewControl: false,
      //mapTypeControl: false,
      maxZoom: 19,
      minZoom: 7,
    //  mapTypeControlOptions: {
    //    mapTypeIds: [google.maps.MapTypeId.SATELLITE, "MAPT"]
     // },
      scrollwheel: this.defscrollwheelzoom, 
      mapTypeId: google.maps.MapTypeId.SATELLITE,
      draggableCursor:'pointer'
    };         
		
    this.gmap = new google.maps.Map(this.elmap, mapOptions); 
    // alert(this.gmap.getBounds());     
	}

	this.addControl = addControl;
	function addControl(ctrl, div, pos) {
		ctrl.mapi = this;
		//this.gmap.addControl(div, pos);
    this.gmap.controls[pos].push(div);

	}
	
	this.print = print;
	function print() {
		//window.print();
	}
	
	this.attachLeaveConfirmation = attachLeaveConfirmation;
	function attachLeaveConfirmation() {
		var els = document.getElementsByTagName("a");
		
		for (var ti = 0; ti < els.length; ti++) {
			var el = els[ti];
			if (el.rel == 'refout') { 
				google.maps.event.addDomListener(el, "click", function(event) { imageThis.checkLeave.call(imageThis, event); });
			}
		}

	}
	
	this.checkLeave = checkLeave;
	function checkLeave(e) {
  
		//if (this.tour.points.length > 0) {
			if (confirm('Opravdu si p?ejte opustit mapovou aplikaci? V?echny neulo?ené zm?ny budou ztraceny.')) {
				return true;
			} else {
			  try {
					e.preventDefault();
				} catch (ex) {
				}
				return false;
			}
		//} else {
			//return true;
		//}
	}
}

// map overlay - cz / sk relief

function NewReliefOverlay(pssw, time) {
      
  var mapTuristLayerOverlayOptions =  {
    getTileUrl: function(coord, zoom) { 
      //return "http://services.tmapserver.cz/ftiles/gm/sum/"+zoom+"/"+coord.x+"/"+coord.y+".png";
      return 'http://services.tmapserver.cz/stiles/gm/sum/'+zoom+'/'+coord.x+'/'+coord.y+'.png?m=s&t='+time+'&k='+pssw;
    },
    tileSize: new google.maps.Size(256, 256),
    isPng: true,
    opacity: 1,
    maxZoom: 15,
    minZoom: 7
  }; 
      
  var TuristLayerOverlay = new google.maps.ImageMapType(mapTuristLayerOverlayOptions);
	 
	return TuristLayerOverlay;
  
} 

// map type - turist - w/o turis/cyklo
function NewTileMapTuristTM(pssw, time) {
        
  var mapTuristTMOptions =  {
    getTileUrl: function(tile, zoom) {
    
    //return "http://services.tmapserver.cz/ftiles/gm/tm/"+zoom+"/"+tile.x+"/"+tile.y+".png";
    return 'http://services.tmapserver.cz/stiles/gm/tm/'+zoom+'/'+tile.x+'/'+tile.y+'.png?m=s&t='+time+'&k='+pssw;
    
    },
    tileSize: new google.maps.Size(256, 256),
    maxZoom: 15,
    minZoom: 7,
    opacity: 1,
    isPng: true,
    name: 'MapTuristTM'
  }; 
  mapTuristTMOptions.copyright = 'Data map &copy; SHOCart, T-MAPY';
  
  var mapTuristTMType = new google.maps.ImageMapType(mapTuristTMOptions);

	return mapTuristTMType;
}

// map type - turist
function NewTileMapTurist(pssw, time) {

  var mapTuristOptions =  {
    getTileUrl: function(tile, zoom) {
      var dir;
    	if (zoom > 15) {
        dir = 'tm';
        mapTuristOptions.copyright = 'Data map &copy; SHOCart, T-MAPY';

    	} else {      
        dir = 'shc';
        mapTuristOptions.copyright = 'Data map &copy; SHOCart, T-MAPY'; 
    		        
    	}
      
      //return "http://services.tmapserver.cz/ftiles/gm/shc/"+zoom+"/"+tile.x+"/"+tile.y+".png";
      return 'http://services.tmapserver.cz/stiles/gm/'+dir+'/'+zoom+'/'+tile.x+'/'+tile.y+'.png?m=s&t='+time+'&k='+pssw;
    },
    
    tileSize: new google.maps.Size(256, 256),
    maxZoom: 15,
    minZoom: 7,
    opacity: 1,
    isPng: true,
    name: 'MapTurist'
  }; 
  
  var mapTuristType = new google.maps.ImageMapType(mapTuristOptions);
  //map.gmap.mapTypes.set('MAPT', map.maptypeturist);
  //map.gmap.setMapTypeId('MAPT');  
  //map.gmap.overlayMapTypes.push(tl);
  //map.gmap.overlayMapTypes.insertAt(0, tl);
	//var mt = new GMapType([tl], G_SATELLITE_MAP.getProjection(), "MAPT", {errorMessage:null});
	//mt.getErrorMessage = function() { return "Pro toto p?iblí?ení není k dispozici mapový podklad.<br />Zkuste oddálit mapový vý?ez.<br />Tato mapa je navíc dostupná pouze pro ?eskou republiku a Slovensko."; };
	
	//return mt;
  return mapTuristType;
}

// map type - OSM
function NewTileMapOSM(pssw, time) {
        
  var mapTuristOSMOptions =  {
    getTileUrl: function(tile, zoom) {
      return 'http://tile.openstreetmap.org/' + zoom + '/' + tile.x + '/' + tile.y + '.png';   
    },
    tileSize: new google.maps.Size(256, 256),
    maxZoom: 15,
    minZoom: 7,
    opacity: 1,
    isPng: true,
    name: 'OpenStreetMap'
  }; 
  mapTuristOSMOptions.copyright = '&copy; OpenStreetMap contributors';
        
  var mapTuristOSMType = new google.maps.ImageMapType(mapTuristOSMOptions);

	return mapTuristOSMType;
}

// map type - turist/cyklo
/*function NewTileMapTuristCyklo() {
}*/

// map overlay - cz / sk wms
/*
function NewWMSOverlay() {
	var tl = new GTileLayer(null, null, null, {opacity:1, isPng:true});
    tl.getTileUrl = function(tile, zoom) {
    	x1 = tile.x * 256;
    	y1 = tile.y * 256;
    	x2 = tile.x * 256 + 256;
    	y2 = tile.y * 256 + 256;
    	
		proj = G_NORMAL_MAP.getProjection();

		gps1 = proj.fromPixelToLatLng(new GPoint(x1, y2), zoom);
		gps2 = proj.fromPixelToLatLng(new GPoint(x2, y1), zoom);
    	
    	cs = gps1.lng() + '/' + gps1.lat() + '/' + gps2.lng() + '/' + gps2.lat();
    	
    	var url = "http://www.kamennimuzici.cz/mapa/wmstile.php?c=" + cs;
    	
   		return url;
    };
    tl.minResolution = function() { return 7; };
    tl.maxResolution = function() { return 19; };
    tl.isPng = function() { return true; };
    tl.getOpacity = function() { return 1; }
    tl.getCopyright = function() { return ""; }

	var tlo = new GTileLayerOverlay(tl, null);
	
	return tlo;
} */