510538 Website debugging

Working on this site currently: [login to view URL] Anyway, when I use the shortcode to add a gravity form to a page, it breaks the theme and doesn't display the cufon properly. This issue only exists in IE8. I am using this page as a test page: [login to view URL] It works fine in Firefox, IE9, Chrome and Safari. It's only IE8 that has the issue. I know it's only one browser but IE8 accounts for over 30% of all traffic to my website, so I have to look after those users! I dug around a little more and found this. The [login to view URL] ([login to view URL]) file is throwing an error in IE8 screenshot: [login to view URL] but not in IE9 screenshot: [login to view URL] I need someone to fix this bug so that the website can function properly with IE8 and Gravity Forms at the same time.