[Google Maps API v2] How can I custom the double clicked event in Google Maps?

Hi guys,
I want to know if I can custom the double clicked event in Google
Maps? As follows is my code, Could someone do me a favor?

var map = new GMap2(document.getElementById("map_canvas"));
map.setCenter(new GLatLng(37.4419, -122.1419),
13);
map.setUIToDefault();
map.disableDoubleClickZoom();
GEvent.addListener(map,"dbclick",function(){
alert("blessdyb");
});

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