[ Thanks to Dolores Parker for this link.
]
“Want to add a couple of cool features to your Web site without
delving into the world of Web programing? In this case, you might
want to give GreyBox a try. It’s a tiny (only 22KB)
JavaScript-based tool, released under the LGPL, that allows you to
add page-in-a-page and gallery features using just a few
easy-to-understand lines of code (check GreyBox’ Web site for some
examples).“To install GreyBox, download the latest version of the package,
unpack it, and upload the greybox folder onto your server…”