Multi Friend Selector Popup using FB.UI for Facebook Tab and App

Facebook tab only takes 520px, or if you develop facebook apps with width less than 580, you will get the invitation preview dialog cuts off when you are using the multi friend selector.

I can't find any way to resize the invitation preview dialog, so i made a popup multi friend selector.

First of all, remember to do FB.init, get the code here, I'm using the "Asynchronous Loading"

In invite.php(or where you want to put the MFS in), put the below code

Now the button to call up the multi friend selector:

Here's some important notes:
1) display: 'popup' - without this, the FB.UI won't works in facebook tab
2) display: 'dialog' - does not works in facebook tab, use this in facebook app, it looks better
3) Once invitation is send, it will goes to share.php, share.php will be the page you get IDS from your mfs, you can echo a javascript windows close at share.php at the end of your code
4) back to invite.php, you'll see i put both self.location.href = 'thank.php'; in the response statement, whether there is a response or not, i direct the facebook tab to thank.php

Hope this help.