Coothead, this is not a commercial application, it is something that was put together very quickly for a purpose
It does not matter if the site is commercial or not. The final target is the user. The user has a browser, and browsers did evolve within years.
Now, I suppose you needed a slideshow with fade effect. Should have been more carefully, you must have found dozens up-to-date, cross-browser applications. A simple Google will provide:
Don't mention that you could have used a library like JQuery, or Prototype, or other, for a quick implementation.
But, be as you wish.
Just some friendly thoughts, you know...