kmiles has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks. I need a way to redirect a browser if the link the user clicks is invalid/returns 404 error. I can't do it directly in perl prior to the user click because the perl server is outside of our LAN and the link will only work from inside the LAN. Javascript?

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Re: Redirect if hyperlink fails
by jasonk (Parson) on Jan 17, 2008 at 01:13 UTC

    The only way to do this is for your application to load the url, determine if it is a 404 or not, and then give the appropriate URL to the browser. Once the browser clicks a link and leaves your site, you don't have any more control over it.

    We're not surrounded, we're in a target-rich environment!
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Re: Redirect if hyperlink fails
by moritz (Cardinal) on Jan 17, 2008 at 07:59 UTC
    On the server on which the 404 occurs you can install a custom error handler script that does the redirect - if you have access to that server.
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