[jQuery] IE7 and jQuery Corners.....

Howdy,
On a site I'm test designing I'm using jQuery and Corners, and it's
working great so far. The problem I'm having with my site is IE7. In
Firefox, it works great, all corners are the way I want them. In IE7,
only the bottom is rounded. I need help......
http://www.jswindle.com/testing/trisha/
Thanks!