[jQuery] LightBox (or Modal) with ajax response from a POST type

[jQuery] LightBox (or Modal) with ajax response from a POST type


I've been trying this a while using multiple types of lightboxes, as
well as jqm - modal (and another modal but I can't remember what it
was called).
I have an ajax page that I retrieve with
[code]
$.ajax({
    type: "POST",
            url: "add.php",
            data: "c="+c+"&sid="+sid,
            success: function(response){
                $('#pop-up').html(response);
        }
});
[/code]
but I'm unable to get any sort of lightbox that works with a POST, all
the onces I've seen take the parameters from a link, but I can't quite
do that.
Has anybody had a lightbox or modal working with a page that is
retrieved via ajax with post parameters?
Any idea who to accomplish this?
Clearly what I've been trying hasn't been working, so I don't think
there is any point in showing you what I've got, 'cause I'm quite sure
I'm off on the completely wrong track.