jquery plugins - How to create pop up windows on google map clusterer circles -

i using following google map plugin

google map clusterer

and works perfectly(insead of random variable see in link read locations database.)

now have been asked followoing: when user hover on clustered area(not markers) , clustered area mean red or yellow or blue circle , want pop window appears showing information . searched web lot not find anything, possible this?(i appreciate help)

update:

here code using :

$('#map_canvas').gmap({ 'zoom': 3, 'disabledefaultui': true }).one('init', function (evt, map) {           var bounds = map.getbounds();         var temp = mark1;         var southwest = bounds.getsouthwest();         var northeast = bounds.getnortheast();         var lngspan = northeast.lng() - southwest.lng();         var latspan = northeast.lat() - southwest.lat();         (var = 0; < 300; i++) {              var contentstring = 'test';               var $marker = $(this).gmap('addmarker',                     {                         'id': i, 'position': new google.maps.latlng(                         southwest.lat() + latspan * math.random(),                         southwest.lng() + lngspan * math.random()),                         'content': 'm_' +                     }).click(function (i) {                         $('#map_canvas').gmap('openinfowindow', {                             content: this.content                         }, this);                     });             markers.push($marker); // add marker array         }          $(this).gmap('set', 'markerclusterer', new markerclusterer(map, $(this).gmap('get', 'markers')));        }); 

with latest markerclusterer.js should work:

    google.maps.event.adddomlistener(markerclusterer, 'mouseover', function() {         console.log('mouse on marker clusterer');     });