IE Breaking My Simple jQuery Function

IE Breaking My Simple jQuery Function

Hello!
I created a simple slideshow using jQuery, and, for some reason, it doesn't work in IE7.

Here is the link: http://unitedfrontmn.org/website/

Please look at the top slideshow with the "1 2 3" controls. Click one of those numbers and notice that nothing happens in IE7. Everything works fine in Firefox, Safari, and Chrome.

Do you know why this is happening?

Thank you!
Sarah