client side validations on document having multiple forms & external jsp

Hi,

Due to the long jsp page(limitations of Verify Error, loading time) , I have made 3 jsp files and included them in main jsp page using jsp action tags(dynamic/external jsp).

Main jsp page contains.

<jsp:include page="incECHeaderExt.jsp" flush="true" />

<jsp:include page="incTabsExt.jsp" flush="true" />

<jsp:include page="incPartItemsExt.jsp" flush="true" />

<%@ include file="incFooter.jsp" %>

Each jsp page is having its own form and controls.

Now in main page if user clicks a button (in incFooter.jsp), i need to validate input fields/dropdows,check boxes in the above three external files before calling server method.

Pl provide some sample code how can i access/call elements

of these external file forms to validate.

Thanks

Markandeya