<form action ="/creat.jsp" method="post">
....
...
...
...
<input name="sub1" type="submit" value="" onclick="document.all.subt.value=this.name">
<input name="sub2" type="submit" value="" onclick="document.all.subt.value=this.name">
<input name="sub3" type="submit" value="" onclick="document.all.subt.value=this.name">
<input name="sub4" type="submit" value="" onclick="document.all.subt.value=this.name">
<input name="subt" type="hidden">
</form>
<%
select case request("subt")
   case "sub1"
   case "sub2"
   case "sub3"
   case "sub4"
   case else
end select
%>