note Masem In your code, you prep your translation hash %m with keys from the input alphabet, and values of a through z. What if the input alphabet was <CODE>[a..z1]</CODE>, or <CODE>[a..z0-9]</CODE>? These are more than 26 characters and thus, the 27th and higher characters will have null values for their keys, and will mess up your tr-and-back transformation. <HR> <I> Dr. Michael K. Neylon - <a href="mailto:mneylon-pm@masemware.com">mneylon-pm@masemware.com</a> || "You've left the lens cap of your mind on again, Pinky" - The Brain </I> 79130 79141