I found a Mod10 script that checks the numbers in a given credit card.

<%

Function IsCreditCard(ByRef asCardType, ByRef anCardNumber)

' Performs a Mod 10 check to make sure the credit card number
' appears valid
My question is this?

THe asCardType and anCardNumber are they variables that I name based on the textboxes name that contain the data on the previous form?