feather animation on SoundCloud for UserScript

smooth-soundcloud.user.js

// ==UserScript==
// @name        smooth SoundCloud
// @namespace   http://noromanba.flavors.me
// @description feather animation on SoundCloud for UserScript
// @include     *://soundcloud.com/*
// @include     *://*.soundcloud.com/*
// @grant       none
// @run-at      document-end
// @version     2015.5.20.0
// @homepage    https://gist.github.com/noromanba/5c509ad759190f6b6d9d
// @downloadURL https://gist.github.com/noromanba/5c509ad759190f6b6d9d/raw/smooth-soundcloud.user.js
// @license     MIT License http://nrm.mit-license.org/2014
// @author      noromanba http://noromanba.flavors.me
// @icon        https://upload.wikimedia.org/wikipedia/commons/thumb/0/0d/Michael_Jackson_-_icon.svg/32px-Michael_Jackson_-_icon.svg.png
// @icon64      https://upload.wikimedia.org/wikipedia/commons/thumb/0/0d/Michael_Jackson_-_icon.svg/64px-Michael_Jackson_-_icon.svg.png
// ==/UserScript==

// Icon (PD by Pintoandres91 JovianEye Was_a_bee)
// https://commons.wikimedia.org/wiki/File:Michael_Jackson_-_icon.svg

// Devel
// https://gist.github.com/noromanba/5c509ad759190f6b6d9d

(function () {
    var FPS = 5; // change fps as you like

    var throttleAnimation = function forceFallback(fps, ctx) {
        fps = fps || 10;
        ctx = ctx || window;
        var start = function (callback) { return ctx.setTimeout(callback, 1000 / fps); };
        var stop = function (callback) { return ctx.clearTimeout(callback, 1000 / fps); };

        if (ctx.requestAnimationFrame) {
            ctx.requestAnimationFrame = start;
            ctx.cancelAnimationFrame = stop;
            return;
        }

        ['moz', 'webkit', 'ms', 'o'].some(function (prefix) {
            if (ctx[prefix + 'RequestAnimationFrame']) {
                ctx[prefix + 'RequestAnimationFrame'] = start;
                ctx[prefix + 'CancelAnimationFrame'] = stop;
                return true;
            }
        });
    };

    throttleAnimation(FPS);
})();