document.observe('dom:loaded', function () {
	var list = $$('#content .menu ul').first(),
		items = list.select('li');
	
	items.each(function (item) {
		var member = item.innerHTML.stripTags();
		item.store('surname', $w(member)[1]);
	});
	
	console.log(items.invoke('retrieve', 'surname').sort());
});