var centerLatitude  = 48.140833;
var centerLongitude = -123.408333;
var startZoom       = 13;

var map;

function initmap()
{
    if (GBrowserIsCompatible()) {
         map = new GMap2(document.getElementById("googlemap"));
         map.addControl(new GSmallMapControl());
         map.addControl(new GScaleControl());
         map.addControl(new GMapTypeControl());
         var location = new GLatLng(centerLatitude, centerLongitude);
         map.setCenter(location, startZoom);

         var marker = new GMarker(location);
         map.addOverlay(marker);
         var panel = document.getElementById("panel");
         var dir= new GDirections(map, panel);
         dir.load()
    }
}

window.onload = initmap;
window.onunload = GUnload;