create two subform one for mailing address(put all the fields required
for mailing address inside this subform) and another for Delivery
address(put all the required fields of delivery address inside this
subform).On the click of mailing address radio
button:form1.firstpage.Subform1.presence="visible";form1.firstpage.Subform2.presence="invisible";form1.firstpage.Subform2.h="0";form1.firstpage.Subform2.w="0";On
the click of Delivery address radio
button:form1.firstpage.Subform2.presence="visible"...