function remove_field(element, item) {
  element.up(item).remove();
}

// for copyright notice
$(document).ready(function() {
  $("a#why-small").click(function() {
    if($(this).data('dont')==1) return;
    $(this).after(' Thumbnails are shown because we do not have permission to publish larger images. ' + 
    'If you own the publication rights to this work, please <a href="/page/contact">contact us</a>.');
    $(this).data('dont',1);
    return false;
  });
});