dynamic header.asp

is it possilbe to have dynamic header.asp like this?
where I have header1.asp, header2.asp, & header3.asp
And when ever I'm loading category 1, I want the header1.asp to load and so on..

I tried this.. but it didn't work..

<%
if CatID = 1 then
%>
<!--#include file="header.asp"-->
<%
elseif CatID = 1 then
%>
<!--#include file="header1.asp"-->
<%
end if
%>

do a search for "Dynamic Includes" to find the solution to your problem.