I've came across a weird bug with this, its been mentioned on their forum but there's not a fix so I thought I'd post here to see if anybody else has came across it.

Basically if you go to: http://jamesowers.co.uk/cms/add.php in ie you will see the content box doesn't work but if you go to: http://www.jamesowers.co.uk/cms/add.php it works fine. Does anybody know what would make this happen? The javascript error is 'access denied'.