[jQuery] j.readyState issue with specific set of users

[jQuery] j.readyState issue with specific set of users

Hi All,
We are facing strange issue in our application.
A group if users using IE6 are getting j.readyState error when they
perform any operation.
This is very strange as the application is working fine in IE7.
'J.readyState' is null or not an object
Can someone please help on this?
Regards,
Ashwin