validation of two calendars

[ravi van]

hi i have two jsf calendars.how to validate these two calendars.dates should not be null.dates should not be greater than current date.from date should not be greater than to date.canany one help me.im using jsf1.1.

<t:inputCalendar align="right" id="fromDate" maxlength="10" size="12" value="#{testbean.fromdate}" monthYearRowClass="monthYearRowClass" binding="#{testbean.fromdateComp}"

weekRowClass="weekRowClass" dayCellClass="dayCellClass" currentDayCellClass="currentDayCellClass" popupTodayString="Today is :"

popupWeekString="Wk" renderAsPopup="true" renderPopupButtonAsImage="true" popupDateFormat="dd/MM/yyyy"

alt="Calendar" title="Calendar"



t:inputCalendar

h:message for="fromDate"

t:inputCalendar id="ToDate" maxlength="10" value="#{testbean.todate}" monthYearRowClass="monthYearRowClass" binding="#{testbean.todateComp}"

weekRowClass="weekRowClass" dayCellClass="dayCellClass" currentDayCellClass="currentDayCellClass"

popupTodayString="Today is :" popupWeekString="Wk" renderAsPopup="true" renderPopupButtonAsImage="true"

popupDateFormat="dd/MM/yyyy" alt="Calendar" title="Calendar">



t:inputCalendar

h:message for="ToDate”