User Print Invoice

[HotAir]

Hi,

When logged in as admin, we can print an invoice for a listing.
I'd like to add a link to the user's userbrowselistings.tpl.php so they can print one for themselves.

However, when I try to call 'invoice.php' (which is in the administration directory), it redirects to the admin login page.

Invoice.php calls /administration/init.php, which is encoded.

Eric, is it possible to provide a different init.php that could be used to run only the invoice function, or is there another way to provide the invoicing display feature for users?

Thanks

P.S. I'm aware of privacy issues related to using invoice.php when not logged in as administrator. I plan to use mod_rewrite to obvuscate the invoice number, which must be passed on to invoice.php, by hiding the invoice number within a very long string of numbers and letters. I'll also rename invoice.php to something else so it isn't recognized by someone familiar with 68c.