Thoughts on web development and technologies by Peter Gasston
Dynamic Text Replacement
An introductory tutorial to Dynamic Text Replacement. The formatting of the page could be better, but it’s a well-written guide.
I’ve started using the sIFR method on a few sites, and it’s pretty useful; it does introduce a whole new set of challenges to your development, however - notably with the use of z-index and transparency, especially in IE (of course) - so use with caution.