// This function gets called when the end-user clicks on some date.
function selected(cal, date) {
    cal.sel.value = date; // just update the date in the input field.
    if (cal.dateClicked)
	// if we add this call we close the calendar on single-click.
	// just to exemplify both cases, we are using this only for the 1st
	// and the 3rd field, while 2nd and 4th will still require double-click.
	cal.callCloseHandler();
}

// And this gets called when the end-user clicks on the _selected_ date,
// or clicks on the "Close" button.  It just hides the calendar without
// destroying it.
function closeHandler(cal) {
    cal.hide();                        // hide the calendar
    //  cal.destroy();
    _dynarch_popupCalendar = null;
}

// This function shows the calendar under the element having the given id.
// It takes care of catching "mousedown" signals on document and hiding the
// calendar if the click was outside.
function showCalendar(id, format, showsTime, showsOtherMonths) {
  var el = document.getElementById(id);
  if (_dynarch_popupCalendar != null) {
	// we already have some calendar created
	_dynarch_popupCalendar.hide();                 // so we hide it first.
  } else {
	// first-time call, create the calendar.
	var cal = new Calendar(1, null, selected, closeHandler);
	// uncomment the following line to hide the week numbers
	// cal.weekNumbers = false;
	if (typeof showsTime == "string") {
	  cal.showsTime = true;
	  cal.time24 = (showsTime == "24");
	}
	if (showsOtherMonths) {
	  cal.showsOtherMonths = true;
	}
	_dynarch_popupCalendar = cal;                  // remember it in the global var
	cal.setRange(1900, 2070);        // min/max year allowed.
	cal.create();
  }
  _dynarch_popupCalendar.setDateFormat(format);    // set the specified date format
  _dynarch_popupCalendar.parseDate(el.value);      // try to parse the text in field
  _dynarch_popupCalendar.sel = el;                 // inform it what input field we use

  // the reference element that we pass to showAtElement is the button that
  // triggers the calendar.  In this example we align the calendar bottom-right
  // to the button.
  //_dynarch_popupCalendar.showAtElement(el, "Br");        // show the calendar
  var p = Calendar.getAbsolutePos(el);
    _dynarch_popupCalendar.showAt(p.x, p.y);
	

  return false;
}