I maintain an online documentation system for my company. The writers create the documentation in SGML ( an xml like language ). The SGML is then combined with XSLT and transformed into HTML.
This allows us to easily make changes to the documentation layout without doing any coding. Its just a matter of changing the XSLT.
This works well for us. In our case, its a read only document. The user isn't interacting with the documentation.
Also, by using XSLT, you are working closer to your problem domain (HTML). I always consider that to be good idea.
Lastly, if your current system WORKS, leave it alone. I would never suggest trashing your existing code. If I was starting from scratch, I would use XSLT, but in your case, I would use what you have.
