https://www.vsphv.ch/wp-content/themes/wp-aurora/js/ct.mobile.menu.js?ver=1.0

1jQuery(function($){
2	$(document).ready(function(){
3
4		$("<select />").appendTo("header nav");
5		$("<option />", {
6		   "selected": "selected",
7		   "value" : "",
8		   "text" : "Go To..."
9		}).appendTo("header nav select");
10
11		$("header nav a").each(function() {
12			var el = $(this);
13			if(el.parents('.sub-menu').length >= 1) {
14				$('<option />', {
15				 'value' : el.attr("href"),
16				 'text' : '- ' + el.text()
17				}).appendTo("header nav select");
18			}
19			else if(el.parents('.sub-menu .sub-menu').length >= 1) {
20				$('<option />', {
21				 'value' : el.attr('href'),
22				 'text' : '-- ' + el.text()
23				}).appendTo("header nav select");
24			}
25			else {
26				$('<option />', {
27				 'value' : el.attr('href'),
28				 'text' : el.text()
29				}).appendTo("header nav select");
30			}
31		});
32
33		$("header nav select").change(function() {
34		  window.location = $(this).find("option:selected").val();
35		});
36
37	});
38});