Active Server Pages w/ Squid-2.1

[Joachim Astel]

Using Squid-2.1-RELEASE I get an error

        Microsoft VBScript runtime error '800a0005'
        Invalid procedure call or argument: 'Right'
        /exchange/USA/login.asp, line 27

of my Netscape 4 communicator. Going directly to the web site,
the error does not occur: http://www.escs.de/exchange/

Is this a bug or feature within my configuration?

Greetings

        -Achim