Multi-Friend-Invite on my website?

I have a website and users who have registered on my site by using FBConnect to login. As they're authenticated with my app I have access to their profile from PHP and from JS. I'm trying to render the multi-friend-invite with FBML and nothing is happening.

I'm trying to build a "refer your friends" page and render a multi-friend-invite widget on开发者_开发技巧 our webpage.

Can someone give me some advice? The FBML i'm using is not being modified in the DOM at all. I've tried a direct FB.XFBML.parse() call on the surrounding <div> and it's still doing nothing.

Help?