var t1      = L.circle([11, 40], 500000, {
                        color: 'blue',
                        fillColor: 'blue',
                        fillOpacity: 0.5,
                        title: 'town'
                        });

        t1.on('click', onMarkerClick);

         function onMarkerClick(e) {
            var coordinates = e.latlng.toString();
            coordinates = coordinates.substring(7,coordinates.length);
            coordinates = coordinates.substring(0, coordinates.length-1);
            info.update(coordinates, 'test');
        }