function onMapClick(e) {
    e.layer._leaflet_id = 'polyindex'+polyindex+'';
    //increment polyindex used for unique polygon id's
    polyindex++;
    map._leaflet_id.setStyle(highlightFeature);
}

    function onEachFeature(feature, layer) {
    layer.on({
        mouseover: highlightFeature,
        mouseout: resetHighlight,
        click: onMapClick
    });
    layer._polygonId = feature.id
}