var directionsDisplay;
var directionsService;;
var map;

function Initialize()
{
    directionsService = new google.maps.DirectionsService();
    directionsDisplay = new google.maps.DirectionsRenderer();
    var showhome = new google.maps.LatLng(50.91617, -114.12322);
    var myOptions = {
                        zoom:16,
                        mapTypeId: google.maps.MapTypeId.ROADMAP,
                        center: showhome
                    }
    map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    directionsDisplay.setMap(map);
    directionsDisplay.setPanel(document.getElementById("directionsPanel"));
}

function calcRoute() 
{
    var start = document.getElementById(fromAddress).value;
    var end = new google.maps.LatLng(50.91617, -114.12322);
    var request = { origin:start, destination:end, travelMode: google.maps.DirectionsTravelMode.DRIVING };
    directionsService.route(request, requestDirectionsCallback);
    return false;
}

function requestDirectionsCallback(result, status)
{
    if (status == google.maps.DirectionsStatus.OK) 
    {
        directionsDisplay.setDirections(result);
    }
}