Zoom_changed - Center
<p>I want to add zoom_changed AddListner to my map but it is not working .Any one help me to resolve this Thanks in Advance.My code is   </p>

<pre><code> GEvent.addListener(map, "zoom_changed", function() {
    alert("You before Zoomed the map.");
    map.setCenter(new GLatLng(17.971599, 77.594563), 10);
    alert("You After Zoomed the map.");
 }
</code></pre>

<p>it works fine for click instead of zoom_changed.</p>
