}function calcRoute() {var start = document.getElementById('address').value;var end = '';var request = {origin:start,destination:end,travelMode: google.maps.TravelMode.DRIVING };directionsService.route(request, function(response, status) {if (status == google.maps.DirectionsStatus.OK) {directionsDisplay.setDirections(response);}});}google.maps.event.addDomListener(window, 'load', initialize);