function initMap(){
		var mapElement = document.getElementById('map');
		
		if(document.body.contains(mapElement)){
			var uluru = {lat: 49.711751, lng: 19.683106};
			var map = new google.maps.Map(mapElement, {
				mapTypeControl: false,
				zoom: 17,
				center: uluru
			});
			var marker = new google.maps.Marker({
				position: uluru,
				map: map
			});
			
			new AutocompleteDirectionsHandler(map);
		}
	}
	
	function AutocompleteDirectionsHandler(map){
		this.map = map;
		this.originPlaceId = null;
		this.destinationPlaceId = null;
		this.travelMode = 'WALKING';
		var originInput = document.getElementById('origin-input');
		var destinationInput = document.getElementById('destination-input');
		var modeSelector = document.getElementById('mode-selector');
		this.directionsService = new google.maps.DirectionsService;
		this.directionsDisplay = new google.maps.DirectionsRenderer;
		this.directionsDisplay.setMap(map);

		var originAutocomplete = new google.maps.places.Autocomplete(originInput, {placeIdOnly: true});
		var destinationAutocomplete = new google.maps.places.Autocomplete(destinationInput, {placeIdOnly: true});

		this.setupClickListener('changemode-walking', 'WALKING');
		this.setupClickListener('changemode-transit', 'TRANSIT');
		this.setupClickListener('changemode-driving', 'DRIVING');

		this.setupPlaceChangedListener(originAutocomplete, 'ORIG');
		this.setupPlaceChangedListener(destinationAutocomplete, 'DEST');

		this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(originInput);
		this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(destinationInput);
		this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(modeSelector);
	}
	
	AutocompleteDirectionsHandler.prototype.setupClickListener = function(id, mode){
		var radioButton = document.getElementById(id);
		var me = this;
		radioButton.addEventListener('click', function(){
			me.travelMode = mode;
			me.route();
		});
	};
	
	AutocompleteDirectionsHandler.prototype.setupPlaceChangedListener = function(autocomplete, mode){
		var me = this;
		autocomplete.bindTo('bounds', this.map);
		autocomplete.addListener('place_changed', function(){
			var place = autocomplete.getPlace();
			if(!place.place_id){
				window.alert('Please select an option from the dropdown list.');
				return;
			}
			if(mode === 'ORIG'){
				me.originPlaceId = place.place_id;
			}else{
				me.destinationPlaceId = place.place_id;
			}
			me.route();
		});
	};
	
	AutocompleteDirectionsHandler.prototype.route = function(){
		if(!this.originPlaceId || !this.destinationPlaceId){
			return;
		}
		var me = this;

		this.directionsService.route({
			origin: {'placeId': this.originPlaceId},
			destination: {'placeId': this.destinationPlaceId},
			travelMode: this.travelMode
		}, function(response, status){
			if(status === 'OK'){
				me.directionsDisplay.setDirections(response);
			}else{
				window.alert('Directions request failed due to ' + status);
			}
		});
	};