toys.js

  // Handle attaching children
  $('#unattached_children a.add').click(function() {
    var icons = $(this).parent();
    var child_type = // work out what the name of the child is
    // Update label text
    $('#attached_children>label').html('Attached '+child_type);
    // Move the item to the attached items list
    $('#AttachedItems .list').append($(this).closest('.item'));
    $('#attached_children .list .item:last-child').append('<input name="'+child_type+'[]" type="hidden" value="'+$('#attached_children .list .item:last-child').attr('id')+'" />');

    // Fix the icons
    $(this).parent().empty();
    icons.append('<a href="#" class="delete">Delete</a>').click(function() {
      $(this).closest('.item').remove();
      return false;
    });
    icons.append('<a href="#" class="move">Move</a>');
    return false;
  });