[jQuery] callback executed before effect ended

[Aljosa Mohorovic]

i'm trying to fadeIn element after first element fadeOut.
i have this in $(document).ready:
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$("a.link").click( function() {
  current = $(".link.current");
  id = $(this).attr('rel');
  next = $("#link_"+id);
  next.addClass('current');
  current.fadeOut('slow', function(){
    next.fadeIn('slow');
  });

  return false;
});
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problem is that next element appears while current element is still
fading out, any idea what i'm doing wrong?

Aljosa Mohorovic