$.extend(DateInput.DEFAULT_OPTS, {
  stringToDate: function(string) {
    var matches;
    if (matches = string.match(/^(\d{2,2})\. (\d{2,2})\. (\d{4,4})$/)) {
      return new Date(matches[3], matches[2] - 1, matches[1]);
    } else {
      return null;
    };
  },

  dateToString: function(date) {
    var month = (date.getMonth() + 1).toString();
    var dom = date.getDate().toString();
    return dom + ". " + month + ". " + date.getFullYear();
  }
});