There are a number of posts on this subject, found using the [Search] function. A few that may be helpful include:

http://65.57.255.42/ubbthreads/ubbthread...h=true#Post4432

http://65.57.255.42/ubbthreads/ubbthread...=true#Post21806

http://65.57.255.42/ubbthreads/ubbthread...=true#Post32595
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Regards,
Richard Ay - Consultant