validate type=creditcard

Just out of curiosity - will this validate AMEX, MC, Visa and Mastercard - since there's a different number of digits in an AMEX number? ~| ColdFusion 8 - Build next generation apps today, with easy PDF and Ajax features -

Re: validate type=creditcard

will this validate AMEX, MC, Visa and Mastercard - since there's a different number of digits in an AMEX number? Normally, it should. In any number, there are digits that identify the type of card, and the bank it comes from. So the rest of the number can be checked independently for each type