(function($){
     $.fn.extend({
         accordion: function() {
            return this.each(function() {
				if($(this).data('accordiated'))
					return false;
				$.each($(this).find('ul, li>div'), function(){
					$(this).data('accordiated', true);
					$(this).hide();
				});
				$.each($(this).find('a:not(.foo)'), function(){
					$(this).click(function(e){
						activate(e.target);
						return void(0);
					});
				});

				var active = false;
				if(location.hash){
					active = $(this).find('a[href=' + location.hash + ']')[0];
                                    }
				else if($(this).find('li.current'))
					active = $(this).find('li.current a')[0];

				if(active){
					activate(active, 'toggle','parents');
					$(active).parents().show();
				}

				function activate(el,effect,parents){
					$(el)[(parents || 'parent')]('li').toggleClass('active').siblings().removeClass('active').children('ul, div').slideUp('fast');
					$(el).siblings('ul, div')[(effect || 'slideToggle')]((!effect)?'fast':null);
				}

            });
        }
    });
})(jQuery);