$(function() {

  $("#subMenu").accordion({
		active: false,
		header: 'li:has(ul) > a.head',
		navigation: false,
		event: 'click',
		collapsible: true,
		autoHeight:false
	});

  $("#subMenu li:has(ul) > a").addClass("arrow");
  $("#subMenu li:has(ul) > a.active").addClass("arrow_active");

 }
);