If I understand correctly, what you want is to create a custom tag to replace a parametrized piece of jsp-code. In JSP2.0 this can be done using tagfiles.
See chapter 15 in the J2EE tutorial, particularly the section "Encapsulating Reusable Content Using Tag Files". http://java.sun.com/j2ee/1.4/docs/tutorial/doc/index.html Rob van Maris
