Disabled accordion's css not applied in IE

Disabled accordion's css not applied in IE

I am using jQuery UI 1.8.2 to create a few accordions which will be enabled/disabled.  The opacity is picked up in Firefox and Chrome.  However, when I check the page in IE, the disabled accordion still looks enabled.  Is there something I need to do to get this to work in IE, or is this some kind of bug?

Thanks a bunch,

Bill