function populateMap(e, layerName, icon) {
  var singleMarker;
  finalLayers[layerName] = new L.MarkerClusterGroup();

  for(var i = 0; i < e.target.latLngs.length; i++) {
    singleMarker = new L.marker(e.target.latLngs[i], {icon: icon});
    finalLayers[layerName].addLayer(singleMarker);
  }

  /* finalLayers[layerName].on('mouseover', function(evt) {
    console.log("mouseover");
    //evt.target.bindPopup('hello').openPopup();
  }); */

  finalLayers[layerName].on('clustermouseover', function(evt) {
    console.log("clustermouseover");
    var popup = L.popup();
    var marker = finalLayers[layerName];

    marker.setZIndexOffset(1000);

    clearTimeout(this.hideTimeout);

    this.showTimeout = setTimeout(function () {
      popup.setLatLng(marker.getLatLng());
      map.addLayer(popup);
    }, 200);
  });

  finalLayers[layerName].on('clustermouseout', function(evt) {
    var popup = L.popup();
    var marker = finalLayers[layerName];

    marker.setZIndexOffset(1000);

    clearTimeout(this.showTimeout);

    this.hideTimeout = setTimeout(function () {
      map.removeLayer(popup);
    }, 200);
  });

  map.addLayer(finalLayers[layerName]);
  fixInitialBounds(e.target.getBounds());
}