The txtmus scripts are loaded by this sequence in the HTML header:
<script src="http://moinejf.free.fr/js/snd-2.js" defer></script> <script src="http://moinejf.free.fr/js/tmcore-2.js" defer></script> <script src="http://moinejf.free.fr/js/tmweb-2.js" defer></script>