$(document).ready(function(){
  $('ul.subnav-5').children("li").children("ul").css({display: "none"}).children("li").children("ul").css({display: "none"});
  var path = location.pathname.substring(1);
  $('ul.subnav-5 a[@href$="' + path + '"]').addClass('on').parent().children("ul").css({display: "block"});
  $('ul.subnav-6 a[@href$="' + path + '"]').parent("li").parent("ul").css({display: "block"});
  $('ul.subnav-6 a[@href$="' + path + '"]').parent("li").parent("ul").parent("li").children("a").addClass('on');
  $('ul.subnav-7 a[@href$="' + path + '"]').parent("li").parent("ul").parent("li").children("a").addClass('on').parent("li").parent("ul").css({display: "block"});
  $('ul.subnav-7 a[@href$="' + path + '"]').parent("li").parent("ul").parent("li").parent("ul").parent("li").children("a").addClass('on');
});