Two solutions for you on IE9

Disable XSS checks for all

or

add mudcat.org to your list of trusted sites on the security tab and disable XSS checks for trusted sites only.

Personally disabling XSS checks for all seems to make sense as IE9 is so security flawed anyway that whether it checks for XSS problems or not makes not a cents worth of difference.

Max - I fully understand you sentiments but I'm not sure Arthur-itus deserved the tirade. Well said to all of us as guests on your site though.

Simon