google.maps.event.addListener(map, 'mousemove', function (event) {
    displayCoordinates(event.latLng);
});

function displayCoordinates(pnt) {
    var coordsLabel = document.getElementById("tdCursor");
    var lat = pnt.lat();
    lat = lat.toFixed(4);
    var lng = pnt.lng();
    lng = lng.toFixed(4);
    coordsLabel.innerHTML = "Latitude: " + lat + "  Longitude: " + lng;
}