Tampermonkey script to ring a bell an xymon alerts

tampermonkey.xymonalarm.user.js

// ==UserScript==
// @name         Alarm on Xymon alert
// @namespace    https://kps.com/
// @version      0.2
// @description  Run an alert on Xymon reds
// @author       Dennis Ploeger <[email protected]>
// @grant        none
// @downloadUrl  https://gist.githubusercontent.com/dploeger/3ad7dbc7f22d9e1f5991b0553fa569c0/raw
// @updateUrl  https://gist.githubusercontent.com/dploeger/3ad7dbc7f22d9e1f5991b0553fa569c0/raw
// @require https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js
// @require https://unpkg.com/tone
// ==/UserScript==

(function() {
    'use strict';

    if (document.body.className === 'red') {
        var synth = new Tone.Synth().toMaster()

        synth.triggerAttackRelease('C5', '8n')
        synth.triggerAttackRelease('C6', '8n')
    }

    // Stop Autoreloading the page
    window.setTimeout(() => {window.stop()}, 500)

})();