function OpenCalendar(formName, fieldName, dateFromField, dateToField) {
	var dateFrom = "";
	var dateTo = "";
	var f = document.forms[formName];
	if (arguments.length == 4) {
		var e1 = f.elements[dateFromField];
		var e2 = f.elements[dateToField];
		if (e1 != null) dateFrom = escape(e1.value);
		if (e2 != null) dateTo = escape(e2.value);
	}
	else {
		var e = f.elements[fieldName];
		if (e != null) {
			dateFrom = escape(e.value);
			dateTo = escape(e.value);
		}
			}
	Calendar = window.open('/admin/calendar.asp?FieldName=' + fieldName + '&FormName=' + formName + '&DateFrom=' + dateFrom + '&DateTo=' + dateTo, 'calendar', 'width=240, height=175, scrollbars=no, status=no, toolbar=no, location=no, top=45, left=45');
	Calendar.focus();
}

// called by calendar.asp to update form
function CalendarDone(newDate, fieldName, formName) {
	document.forms[formName].elements[fieldName].value = newDate;
}