Duolingo Flag Background Script Fork

// ==UserScript==
// @name         Duolingo Flag background
// @namespace   a34c0ac7aca179b6312214a6e1697b5a
// @description  Adds more duo to the website!
// @author       You
// @match        *://www.duolingo.com/*
// @grant        none
// @copyright    2015, Thomas de Roo
// @updateURL   https://monkeyguts.com/828.meta.js?c
// @downloadURL https://monkeyguts.com/828.user.js?c
// ==/UserScript==
function doFlag(){
  	var languagestring = duo.user.get("learning_language");
	var backgroundurl = "notset";
    switch(languagestring){
        case "da":
            // Danish flag
            backgroundurl = "http://i.imgur.com/MVKImbX.jpg";
			break;
        case "sv":
            // Swedish flag
            backgroundurl = "http://i.imgur.com/VN547Ku.jpg";
			break;
         case "he":
            // Israeli flag
            backgroundurl = "https://awesomewallpapers.files.wordpress.com/2010/02/israel.jpg";
			break;
         case "ro":
            // Romania flag
            backgroundurl = "http://wms.sds.pl/wp-content/uploads/2014/01/flags_romania_national_romanian_desktop_1920x1080_wallpaper-249355.jpg";
			break;
          case "yi":
            // Yiddish flag
            backgroundurl = "https://virtualjudah.files.wordpress.com/2009/01/chai_flag_mediinatyehudah.png";
			break;
          case "sw":
            // Swahili flag
            backgroundurl = "https://awesomewallpapers.files.wordpress.com/2010/07/kenya.jpg";
			break;
         case "hi":
            // Hindi flag
            backgroundurl = "http://wallpoper.com/images/00/44/43/89/grunge-flag-of-india_00444389.jpg";
			break;
        case "cz":
            // Czech flag
            backgroundurl = "http://img03.deviantart.net/baef/i/2009/041/5/2/czech_republic_grunge_flag_by_think0.jpg";
			break;
        case "nb":
            // Norwegian flag
            backgroundurl = "http://i.imgur.com/GZSVizM.jpg";
			break;
        case "eo":
            // Esperanto flag
            backgroundurl = "http://i.imgur.com/RqTOULB.jpg";
			break;
        case "vi":
            // Vietnam flag
            backgroundurl = "http://i.imgur.com/8fF8Qz3.jpg";
			break;
        case "hu":
            // Hungarian flag
            backgroundurl = "http://i.imgur.com/AHl1KqM.jpg";
			break;
        case "tr":
            // Turkish flag
            backgroundurl = "http://i.imgur.com/diItxKa.jpg";
			break;
        case "ga":
            // Irish flag
            backgroundurl = "http://i.imgur.com/Dbi7nPR.jpg";
			break;
        case "fr":
            // French flag
            backgroundurl = "http://i.imgur.com/AUxfmNS.jpg";
			break;
        case "it":
            // Italian flag
            backgroundurl = "http://i.imgur.com/qOjj10n.jpg";
			break;
        case "de":
            // German flag
            backgroundurl = "http://i.imgur.com/KjM0RNL.jpg";
			break;
        case "dn":
            // Dutch flag
            backgroundurl = "http://i.imgur.com/ibQ5R2y.jpg";
			break;
        case "es":
            // Spanish flag
            backgroundurl = "http://i.imgur.com/Xdensoa.jpg";
			break;
        case "pt":
            // Brazil flag
            backgroundurl = "http://i.imgur.com/vGHMaiK.jpg";
			break;
        case "uk":
            // Ukraine flag
            backgroundurl = "http://i.imgur.com/NZQtpAa.jpg";
			break;
         case "fi":
            // Finland flag
            backgroundurl = "https://awesomewallpapers.files.wordpress.com/2010/03/finland.jpg";
			break;
        case "pl":
            // Polish flag
            backgroundurl = "http://i.imgur.com/gJ0aMso.jpg";
			break;
        case "ru":
            // Russian flag
            backgroundurl = "http://wallpaperbeta.com/wallpaper_1920x1200/flag_grunge_russia_minimalism_1920x1200_hd-wallpaper-158586.jpg";
			break;
         case "tlh":
            // Klingon flag
            backgroundurl = "https://slm-assets1.secondlife.com/assets/11047777/lightbox/TEXTURE_CULT_IMPORT_KLIGON_EMPIRE_GRUNGE_FLAG.jpg?1423257582";
			break;
         case "cy":
            // Welsh flag
            backgroundurl = "http://img02.deviantart.net/00a4/i/2012/073/3/7/wales_grunge_flag_by_elthalen-d4srabj.jpg";
			break;
        case "el":
            // Greek flag
            backgroundurl = "http://i.imgur.com/QdWgibY.jpg";
			break;
        case "is":
            // Icelandic flag
            backgroundurl = "http://i.imgur.com/o8kcT4L.jpg";
			break;
        case "en":
            // American flag
            backgroundurl = "http://i.imgur.com/3KI66sY.jpg";
			break;
        default:
			backgroundurl = "http://i.imgur.com/3KI66sY.jpg";
            break;
    }
    $("body").css("background", "url("+backgroundurl+")");
    $("body").css("background-size", "100%");
    $("body").css("background-repeat", "no-repeat");
    $("body").css("background-attachment", "fixed");
    $(".nav-footer").css("text-shadow", "1px 1px 0 #000, -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000");
    $(".nav-footer a").css("color", "white");
    //$("#app").css("background", "url('http://i.imgur.com/W6psVNL.png') no-repeat bottom center fixed");
}

function inject(f) { //Inject the script into the document
    var script;
    script = document.createElement('script');
    script.type = 'text/javascript';
    script.textContent = f.toString();
    document.head.appendChild(script);
}
console.log('Userscript loaded: Duolingo Flag Background');
function inject(f) { //Inject the script into the document
    var script;
    script = document.createElement('script');
    script.type = 'text/javascript';
    script.textContent = f.toString();
    document.head.appendChild(script);
}
inject(doFlag);
$(document).ready(function() {
 doFlag();
});
//Meh...
window.setInterval(function(){
       doFlag();
}, 1000);