"Adobe Flash"
is software used to present animated content on a web site. One
function is to present slide shows, such as the one near the bottom of
the Hugh Purvis home page or the SlideShow page. Most web sites like
Googles Picasa use this for there slide shows.
It is availlable from Adobe.Com. Should you see a message on the Home Page Ships Slide Show, you will need to install this software.