isapi&javascript with netscape

[XFI]

We have develloped a website using Microsoft ISAPI. The index page contains 
a Javascript which redirect to a DLL that displays the real index page.
It works perfectly with IE but with Netscape we only see the index page & 
can't click on any link. If someone can tell me why i would be very happy 
cause i've been working on this problem for a few days and can't find out 
any solution. Thks in advance.