Hyperlink button not working in front-end editor

After trying to make an edit to a wiki on the front-end, I found that every formatting button works except the link buttons. Looks like it's trying to run a javascript that never takes. I'm on Firefox 4 on a Windows XP machine. The link buttons work fine when I'm on the Wordpress editing screen.

Since I wasn't able to use the button on the front end, I'm going to blindly make a request that may already be there: When you click the link button, it would be nice if it gave an option of auto-linking to an existing wiki page, especially since these pages don't follow the traditional wiki markup.

With a few feature updates here and there, this plugin could be the perfect wiki solution for my agency's closed-network intranet. Thanks for your work on this.