customer ICON on Google map

#Problem:

Copy from :

https://code.google.com/p/gwt-google-apis/wiki/MapsFAQ

Why does my app throw an exception in Map.addOverlay() when adding a Marker to the map with a custom Icon?

The JavaScript API isn't very clear about this, but when using a custom icon you need to be careful to set the icon size and anchor point. Also, when using a custom icon that isn't shaped like the default marker, the shadow may look funny, so its best to plan on replacing that as well.

    Icon icon = Icon.newInstance("http://www.example.com/foo.png");
    icon.setShadowURL("http://www.example.com/foo-shadow.png");
    icon.setIconSize(Size.newInstance(12, 20));
    icon.setShadowSize(Size.newInstance(22, 20));
    icon.setIconAnchor(Point.newInstance(6, 20));
    icon.setInfoWindowAnchor(Point.newInstance(5, 1));
    map.addOverlay(new Marker(LatLng.newInstance(lat,lng), options));

Problem: GIF animated onn google map?

http://mkhairul.sembangprogramming.com/2011/08/20/google-maps-animated-gif-as-image-marker/