code: function(elem, target) {
  			var inst = this._getInst(elem);
  			return ($.isEmptyObject(inst) ? null : inst.options.calendar.fromJD(
  				parseFloat(target.className.replace(/^.*jd(\d+\.5).*$/, '$1'))));
  		}
docs: Retrieve the date associated with an entry in the datepicker.
  @memberof CalendarsPicker
  @param elem {Element} The control to examine.
  @param target {Element} The selected datepicker element.
  @return {CDate} The corresponding date, or <code>null</code>.
  @example var date = $(selector).datepick('retrieveDate', $('div.datepick-popup a:contains(10)')[0])