Something weird is happening with my site which I don't get. When I enter the URL (domain name) without www, css flyout menu works fine. If I enter it with www, flyout menu doesn't work. There's an error (error message bottom of the browser) that says: "access is denied to: www.domain.com/store/includes/csshover.htc" (domain.com is an example).

I tried it in both IE 6 and 7.