Directory Hierarchy in HTML

SRC="IMAGES/CAT.GIF"
where images is the folder, cat.gif being a pic.
leave as SRC="IMAGES" to open only folder

It works almost exactly like cd works in Windows or Unix...even the bit about . being the current directory and .. being the parent directory:

"file" <- "file" in current directory
"./file" <- "file" in current directory
"../file" <- "file" in parent directory
"child/file" <- "file" in child directory

Fully qualified filenames are usually a good idea, so instead of "child/file", you might be better served with
"http://domain/path/child/file"