$(document).ready(function(){
	$('.expandable').addClass("more_less").toggle(
		function(){
			$(this).removeClass('more_less').addClass('less_more').parent().next('ul.page-list').slideDown();
		},
		function(){
			$(this).removeClass('less_more').addClass('more_less').parent().next('ul.page-list').slideUp();
		}
	).parent().next('ul.page-list').hide();
	
});