Encoding / decoding strings

[oliver at obeattie.com]

Hey Everyone,

Was just wondering if anyone here could help me. I want to encode (and
subsequently decode) email addresses to use in URLs. I believe that
this can be done using MD5.

I can find documentation for encoding the strings, but not decoding
them. What should I do to encode =and= decode strings with MD5?

Many Thanks in Advance,
Oliver Beattie