$(document).ready(function(){
	var temp = $('ul#nav > li.active');
	$('ul#nav').accordion({
		active: ".selected",
		autoHeight: true,
		header: "a.opener",
		collapsible: true,
		event: "click",
		changestart: function(event, ui) {
			$('ul#nav > li').removeClass('active');
			ui.newHeader.parents('li').addClass('active');
			if ($('ul#nav > li a.ui-state-active').length == 0) {
				if (!temp.hasClass('not-close')) temp.addClass('active');
			}
		}
	});
});