Steam - Default language

Make sure you always see the steam page in your preferred language. You can configure the language in the language variable.

Fra og med 04.05.2016. Se den nyeste version.

// ==UserScript==
// @name         Steam - Default language
// @version      0.2
// @description  Make sure you always see the steam page in your preferred language. You can configure the language in the language variable.
// @author       Royalgamer06
// @include      *://steamcommunity.com/*
// @include      *://*.steampowered.com/*
// @run-at       document-start
// @grant        none
// @namespace https://greasyfork.org/users/13642
// ==/UserScript==

//SET YOUR LANGUAGE HERE
var language = "en";
/*
bulgarian: bg,
czech: cs,
danish: da,
dutch: nl,
finnish: fi,
french: fr,
greek: el,
german: de,
hungarian: hu,
italian: it,
japanese: ja,
koreana: ko,
norwegian: no,
polish: pl,
portuguese: pt-PT,
brazilian: pt-BR,
russian: ru,
romanian: ro,
schinese: zh-CN,
spanish: es-ES,
swedish: sv-SE,
tchinese: zh-TW,
thai: th,
turkish: tr,
ukrainian: uk
*/

window.onload = function() {
    var anchors = document.getElementsByTagName("a");
    for (var i = 0; i < anchors.length; i++) {
        if (anchors[i].href.indexOf("l=" + language) == -1) {
            anchors[i].href = addParameter(anchors[i].href, "l", language, false);
        }
    }
};

if (location.href.indexOf("l=" + language) == -1) {
    location.href = addParameter(location.href, "l", language, false);
}

function addParameter(url, parameterName, parameterValue, atStart) {
    replaceDuplicates = true;
    var cl = "";
    if(url.indexOf('#') > 0){
        cl = url.indexOf('#');
        urlhash = url.substring(url.indexOf('#'),url.length);
    } else {
        urlhash = '';
        cl = url.length;
    }
    sourceUrl = url.substring(0,cl);

    var urlParts = sourceUrl.split("?");
    var newQueryString = "";

    if (urlParts.length > 1)
    {
        var parameters = urlParts[1].split("&");
        for (var i=0; (i < parameters.length); i++)
        {
            var parameterParts = parameters[i].split("=");
            if (!(replaceDuplicates && parameterParts[0] == parameterName))
            {
                if (newQueryString === "")
                    newQueryString = "?";
                else
                    newQueryString += "&";
                newQueryString += parameterParts[0] + "=" + (parameterParts[1]?parameterParts[1]:'');
            }
        }
    }
    if (newQueryString === "")
        newQueryString = "?";

    if(atStart){
        newQueryString = '?'+ parameterName + "=" + parameterValue + (newQueryString.length>1?'&'+newQueryString.substring(1):'');
    } else {
        if (newQueryString !== "" && newQueryString != '?')
            newQueryString += "&";
        newQueryString += parameterName + "=" + (parameterValue?parameterValue:'');
    }
    return urlParts[0] + newQueryString + urlhash;
}