Google Maps search function

// On document load execute code for directions to business.

$(document).on('ready page:load', function() {
  // Create new map with infowindow and marker. //

  // New map with a map_canvas ( width, height ) and options.
  var map_canvas = document.getElementById('map_canvas');
  // Latlng for buisiness hardcoded.
  var myLatlng = new google.maps.LatLng(38.197255, -85.767465);
  var map_options = {
    center: myLatlng,
    zoom: 12,
    scrollwheel: false,     // This setting keeps the map from scrolling and panning when the web page is scrolled.
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    mapTypeControl: true
  }
  var map = new google.maps.Map(map_canvas, map_options);

  // Create infowindow with content text.
  var infowindow = new google.maps.InfoWindow({
      content: "Skunwerx Performance LLC, &nbsp&nbsp&nbsp* enter from alley *"
  });

  // Create new marker for business address.
  var marker = new google.maps.Marker({
    position: myLatlng,
    map: map,
    title: 'Skunkwerx Performance'
  });
  // Add event listener for click that reveals infowindow.
  google.maps.event.addListener(marker, 'click', function() {
    infowindow.open(map,marker);
  });

  // Using DirectionsService to display directions.

  // Create new instance of DirectionsService and DirectionsRenderer.
  var directionsDisplay;
  var directionsService = new google.maps.DirectionsService();
  function initialize() {
    directionsDisplay = new google.maps.DirectionsRenderer();

    // Using the instance of Map that was created upon document load.
    directionsDisplay.setMap(map);
    directionsDisplay.setPanel(document.getElementById("directionsPanel"));
  }

  // Get the user address, send request to DirectionsService,
  // and display result on current map.
  function calcRoute() {
    var start = document.getElementById("address").value;
    //var end = document.getElementById("end").value;
    var request = {
      origin: start,
      destination: myLatlng,
      provideRouteAlternatives: false,
      travelMode: google.maps.TravelMode.DRIVING,
      unitSystem: google.maps.UnitSystem.IMPERIAL
    };
    directionsService.route(request, function(result, status) {
      if (status == google.maps.DirectionsStatus.OK) {
        directionsDisplay.setDirections(result);
      }
    });
  }

  // Run code on button click.
  $('input[type="button"][value="Get Directions"').click(function(){
    initialize();
    calcRoute();
  });
});