those article graphics that change like a slideshow... know what I mean?

[asimovman]

I want to know how to make these homepages that seem to be in vogue these days that display a photo for a story, then change to another one, like a slideshow. I don't even know what they're called so I don't what to search for. Here's examples of what I mean:

http://www.pewtrusts.org/

http://cdc.gov/

http://www.collegiatenetwork.org/