code: function(date, dateBegin, dateEnd) {
          if (this.after(date, dateBegin) && this.before(date, dateEnd)) {
              return true;
          } else {
              return false;
          }
      }
docs: Determines whether a given date is between two other dates on the calendar.
  @method between
  @param {Date} date  The date to check for
  @param {Date} dateBegin The start of the range
  @param {Date} dateEnd  The end of the range
  @return {Boolean} true if the date occurs between the compared dates; false if not.