Event.onDOMReady(function() {
    AC.OverlayPanel.overlay.setDelegate({
        willShow: function(overlayPanel, outgoing, incoming) {
            if (incoming && incoming.id.match(/overlay/i) && incoming.id.match(/gallery/i)) {
                AC.OverlayPanel.overlay.overlay.addClassName('overlaygallery');
                overlayPanel.setOverlayShadowImageSrc('http://images.apple.com/ipod/images/overlay_gallery20090909.png');
            }
            return incoming;
        }
    });
});