function getSelectionHandler() {
	  var startDate = null;
	  var ignoreEvent = false;
	  
	  return function(cal) {
			  var selectionObject = cal.selection;

			  // avoid recursion, since selectRange triggers onSelect
			  if (ignoreEvent)
					  return;

			  var selectedDate = selectionObject.get();
		
			  if (startDate == null) {
					  startDate = selectedDate;
					  SELECTED_RANGE = null;
					  //document.getElementById("info").innerHTML = "Click to select end date";

					  // comment out the following two lines and the ones marked (*) in the else branch
					  // if you wish to allow selection of an older date (will still select range)
					  cal.args.min = Calendar.intToDate(selectedDate);
					  cal.refresh();
			  } else {
					  ignoreEvent = true;
					  selectionObject.selectRange(startDate, selectedDate);
					  ignoreEvent = false;
					  SELECTED_RANGE = selectionObject.sel[0];
						
					  //
					  // here SELECTED_RANGE contains two integer numbers: start date and end date.
					  // you can get JS Date objects from them using Calendar.intToDate(number)

					  startDate = null;
					  //document.getElementById("info").innerHTML = selectionObject.print("%Y-%m-%d") +
					  //	  "<br />Click again to select new start date";

					  // (*)
					  cal.args.min = null;
					  cal.refresh();
			  }
	  };
};