Submitting comments within a facebox window

I am using facebox to show my posts, comments, fields and all. The problem I am having is whenever a comment is submitted through the facebox window, the page is redirected to a new page with the new comment. What I want is all of that to happen withing the facebox window.

I’m new to Ajax. I was trying to run the process through Ajax and then replace the facbox content with the new content. This is what I was trying:

function submit_form (){
   $.ajax({
   type:'post',
   url:"<?php echo site_url( '/wp-comments-post.php' ); ?>",
   data:$('form#commentform').serialize(),
   success:function(data){
	//put the returned html into into a facebox popup
	$('#facebox .content').empty();
        $('#facebox .content').html(data);
	}
    });
};

Then updated the comment-template.php accordingly. Any thoughts? I hit a brick wall.