Javier Subervi wrote at 2006-12-11 00:41 -0800:
I have a page template which I use to catch and customize 404 errors. In that page, I call a script that offers site navigation.
This is quite a difficult situation: In case of 404 errors, you may not yet have reached the final destination (as something in the url is problematic -- and the problem does not need to be at the url's end). Within the restrictions of the problem sketched above (only very high intelligence can try to overcome them), I would approach your case in the following way: Have a trivial script in each context where you are interested in special treatment of 404 errors. As the script is trivial, there is no problem, in having a separate copy in each context. The trivial script determines the error context and then calls your centralized (non-trivial) script passing in the determined context. -- Dieter