using https for registring

[Hussein Baghdadi]

Hola ranchers.
I am using Tomcat 4.1.27 and I have the following question:
we know that if we want to use the HTTPS protocol, we must uncomment *some
part* from the server.xml file.
OK, but in my web application, I have a register utiliy, when the user click this hyperlink, then Tomcat must use the HTTPS, like(https://localhost:8000/users/register.jsp)
and if the user doesn't click this link, Tomcat must use the usual HTTP.
(what I want to say is, like java.sun.com site, we can surf the site as usual, but when click on Register, then java.sun.com use HTTPS)
How to perform this functionality??