>
> i know there's simple cf and cfx tags out there do some basic valid card
> number but is there a way to be absolutely sure that the card is valid
> without doing an actual transaction?
>

Here is a bit of Javascript that will validate MasterCard, Visa, American
Express, Diners Club, Discover, enRoute and JCB card numbers.

http://javascript.internet.com/forms/val-credit-card.html

There is a javascript object in there that checks to see if the card number
matches a number of rules.

Please don't ask me how it works, cos my JS skills are not that great.....
:o}

Hope this helps

Regards

Stephen

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