FB Comments Number – not loading

Hi,

great plugin! But please: I nead help.

Everything works fine, I just don’t know, how I can load FB comments number in new loaded posts. I’m using this code:

<div class="comments-link">
	Komentáře (<fb:comments-count href="<?php echo get_permalink($post->ID); ?>"></fb:comments-count>)
</div>

Can someone help? My link: new.primacom.cz

http://ww.wp.xz.cn/plugins/infinite-scroll/