MarkerClusterer.js 修改
g.prototype.remove = function() {
????for (var j = 0, h; h = this._markers[j]; j++) {? ? ? ??
????????var tmplabel = this._markers[j].getLabel();???????
? ? ? ? this._markers[j].getMap() && this._map.removeOverlay(this._markers[j]);
????????this._markers[j].setLabel(tmplabel);
????}
????this._map.removeOverlay(this._clusterMarker);
????this._markers.length = 0;
????delete this._markers
};
