BRAINFUCK Trip Bineural Beat Algorithm UserScript

// ==UserScript==
// @name        BRAINFUCK
// @namespace   BRAINFUCK
// @description This MAY KILL YOU OR GIVE YOU A SEZIURE, OR MAKE YOU TRIP THE FUCK OUT, USE AT OWN RISK
// @include     *
// @version     1
// @grant       none
// Created by http://pastebin.com/u/SalamanderSquad
// ==/UserScript==

//LSD.js
//Modified Isotronic wave generator from http://onlinetonegenerator.com/
//The code can be found here if anyone is interested http://onlinetonegenerator.com/js/binaural.js


var contextClass = (window.AudioContext ||
    window.webkitAudioContext ||
    window.mozAudioContext ||
    window.oAudioContext ||
    window.msAudioContext);

if (contextClass) {
    // Web Audio API is available.
    var context = new contextClass();
}

var oscOn = function (freq1, freq2) {

    merger = context.createChannelMerger(2);

    oscillator1 = context.createOscillator();
    oscillator1.type = 0;
    oscillator1.frequency.value = freq1;
    gainNode = context.createGain ? context.createGain() : context.createGainNode();
    oscillator1.connect(gainNode, 0, 0);
    // gainNode.connect(context.destination,0,0);
    gainNode.gain.value = .1;
    oscillator1.start ? oscillator1.start(0) : oscillator1.noteOn(0)

    gainNode.connect(merger, 0, 1);

    oscillator2 = context.createOscillator();
    oscillator2.type = 0;
    oscillator2.frequency.value = freq2;
    gainNode = context.createGain ? context.createGain() : context.createGainNode();
    oscillator2.connect(gainNode);
    // gainNode.connect(context.destination,0,1);
    gainNode.connect(merger, 0, 0);


    gainNode.gain.value = .1;
    oscillator2.start ? oscillator2.start(0) : oscillator2.noteOn(0)

    merger.connect(context.destination);


}

function start() {
    if (typeof oscillator1 != 'undefined') oscillator1.disconnect();
    if (typeof oscillator2 != 'undefined') oscillator2.disconnect();
    rand = getRandomInt(432, 852) //432Hz and 852Hz are the lowest and highest meditation tones I could find with a little bit of searching
    oscOn(rand, rand + 3);
}

function stop() {
    oscillator1.disconnect();
    oscillator2.disconnect();
}

function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

function BRAINFUCKTrip() {
    start();

    var randColour = '#'+Math.floor(Math.random()*16777215).toString(16);
    document.body.style.background = randColour; //Take advantage of the pavlovian affect to associate different colours with different brain waves, which is basically what a psychedelic does.
}

start();

setTimeout(BRAINFUCKTrip, 100);