I am creating user documentation of multiple files.  Each
file has multiple fields.  I would like for the user to be
able to click on (or hover over) a field name and see all
of the possible codes/descriptions for that field.  For
example, if the field is something like "Gender," then the
help documentation would look like:

F   Female
M   Male
U   Unknown

Other fields would, of course, be more complicated.  I do
need the ability to format the help text into two
columns.  I tried using Bookmarks/hyperlinks but I don't
want to send the user away from the current page.  If
someone knows of a Web site that has more info, please let
me know.

Thanks,
Alex