(function($) {
  jQuery.fn.expandall = function(expandCallback, collapseCallback) {
      var expand_link = $('<li class="uofc-expandall"><a>Expand All</a></li>');
      var collapse_link = $('<li class="uofc-collapseall"><a>Collapse All</a></li>');
      expand_link.click(expandCallback);
      collapse_link.click(collapseCallback);
      var links = $('<ul class="uofc-expandall"></ul>');
      links.append(expand_link);
      links.append(collapse_link);
      $(this).before(links);
  }
})(jQuery);