https://hotel-new-akao.com/common/js/gtm.js

1(function (w, d, s, l, i) {
2  w[l] = w[l] || [];
3  w[l].push({ 'gtm.start': new Date().getTime(), event: 'gtm.js' });
4  var f = d.getElementsByTagName(s)[0],
5    j = d.createElement(s),
6    dl = l != 'dataLayer' ? '&l=' + l : '';
7  j.async = true;
8  j.src = 'https://www.googletagmanager.com/gtm.js?id=' + i + dl;
9  f.parentNode.insertBefore(j, f);
10})(window, document, 'script', 'dataLayer', '

10');
11
12(function (w, d, s, l, i) {
13  w[l] = w[l] || [];
14  w[l].push({ 'gtm.start': new Date().getTime(), event: 'gtm.js' });
15  var f = d.getElementsByTagName(s)[0],
16    j = d.createElement(s),
17    dl = l != 'dataLayer' ? '&l=' + l : '';
18  j.async = true;
19  j.src = 'https://www.googletagmanager.com/gtm.js?id=' + i + dl;
20  f.parentNode.insertBefore(j, f);
21})(window, document, 'script', 'dataLayer', '

21');