| SYSTEM CONFIGURATION VARIABLES
| Set these variables to your system configuration
| The 'end' variable contains the closing code
| for the main container table.
| Set the data directory path
| Your email address and mail host goes here
| Build a convenient return home link
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| Location of help.gif file, modify for your server
| Optional image (full url if used) for top of page
| Category table border and number of columns
| Optional category button size and location, use lbuttons=0 for no buttons
| You supply the buttons with the same name as each of the catcodes and
| ending with gif, eg pets.gif (lower case)
| END OF SYSTEM CONFIGURATION VARIABLES
| Check for existence of data files, if not there, admin message given