I get the following java script error in both web browsers we develop and test for in our office.  Does anyone know what the issue is or how to fix it?
From Firefox 1.0.7 on Windows XP SP2:
Error: top.cs_request.responseXML has no properties
Source File: "http://<codestriker html-folder>/codestriker.js"
Line: 395

From IE 6.0 on Windows XP SP2:
Line: 397
Char: 13
Error: 'null' is null or not an object
code: 0
URL: "http://<codestriker html-folder>/codestriker.pl?topic=7301330&amp;action=view&amp;mode=1&amp;brmode=1&amp;fview=-1"