nction custom() {
      fetch('/set_audiotype', {
            body: JSON.stringify({
                audiotype: parseInt(document.getElementById('audiotype').value),
                reinit: false,
                sessionid:parseInt(document.getElementById('sessionid').value),
            }),
            headers: {
                'Content-Type': 'application/json'
            },
            method: 'POST'
      });
    }
    
	$(document).ready(function() {
	  // var host = window.location.hostname
	  // va