AddThis

Internet Exploer not sharing properly

My issue:

When someone clicks the Facebook share button from my website, the incorrect content is being shared on Internet Explorer. I followed the directions for Facebook Developers which says to use Open Graph and it works perfectly when using Mozilla and Chrome. However when using Internet Explorer 8 or 9 the description and URL of what I want shared is not showing up. (It works with IE6) My site uses iframes which unfortunately I can not change at the moment.

Example:

Go to http://www.weekenddating.com/upcoming.shtml?eventid=1100 using Mozilla and click the Facebook Share button (created with Add This). A readable description, link and image is displayed.

Now go to the same link using Internet Explorer. It does not show the same info that Mozilla displays.
The OG Tags are being ignored in IE.

PLEASE HELP!