oom(),
                     precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2));

                 return "#/" + [
                     center.lat.toFixed(precision),
                     center.lng.toFixed(precision),
                     zoom
                 ].join("/");
             },

                 L.Hash.prototype = {
                     map: null,
                     lastHash: null,

                     parseHash: L.Hash.parseHash,
                     formatHash: L.Hash.formatHash,
