function createMarker(point) {
    var marker = new GMarker(point);
    return marker;
}

function load() {
    if (GBrowserIsCompatible()) {
        var map = new GMap2(window.document.getElementById("gmap"));
        map.addControl(new GSmallMapControl());
        map.addControl(new GMapTypeControl());
        map.addControl(new GOverviewMapControl());

        var point = new GLatLng(53.2265, -3.0134);
        map.setCenter(point, 10);

        map.addOverlay(createMarker(point));
    }
}

window.onload = function () {
    load();
}

window.onunload = function () {
    GUnload();
}