Changes the icons on National Weather Service's forecast pages to the old set of icons.

NWS Old Icons.user.js

// ==UserScript==
// @name         NWS Old Icons
// @namespace    http://lpx.sh/
// @version      0.6.2
// @description  Changes the icons on National Weather Service's forecast pages to the old set of icons.
// @author       Luke
// @match        *://forecast.weather.gov/MapClick.php*
// @grant        none
// ==/UserScript==

(function() {
    "use strict";

    // Replace the icons
    document.body.innerHTML = document.body.innerHTML
        .replace(/newimages\/medium\/hourlyweather.png/g, "newimages//medium/hourlyweather.png")
        .replace(/newimages\/(small|medium|large)/g, "images//wtf")
        .replace(/(?<=images\/\/wtf\/[a-z_0-9]*).png/g, ".jpg")
        .replace(/DualImage\.php\?i=/g, "images///wtf/")
        .replace(/(?<=images\/\/\/wtf\/[a-z_]*)(&|&amp;)j=[a-z_]*/g, "")
        .replace(/(?<=images\/\/\/wtf\/[^"]*)(&|&amp;)jp=[0-9]*/g, "")
        .replace(/(?<=images\/\/\/wtf\/[a-z_]*)(&|&amp;)ip=/g, "")
        .replace(/(?<=images\/\/\/wtf\/[a-z_0-9]*)"/g, ".jpg\"")
        .replace(/(?<=images)\/+/g, "/")
        .replace(/(?<=images\/wtf\/)(n)?ra_sn/g, "$1rasn")
        .replace(/(?<=images\/wtf\/)(n)?wind_[a-z]{3}/g, "$1wind")
        .replace(/(?<=images\/wtf\/)(n)?(fzra_sn|sn_ip)/g, "$1mix")
        .replace(/(?<=images\/wtf\/)nmix/g, "mix")
        .replace(/(?<=images\/wtf\/)(n)?ra_fzra/g, "$1raip");

    // Fix the map
    $("body").html($("body").html());
    $(".ol-viewport").first().remove();
})();