(function () {
    var path = window.location.pathname;
    var link = "https://practice.rs" + path;
    var word = "English";
    var lang = "zh-CN";
    var changeLang = "切换到英语";
    
    if (window.location.href.indexOf("zh.") == -1) {
        link = "https://zh.practice.rs" + path;
        word = "简体中文";
        lang = "en";
        changeLang = "Switch to Chinese"
    }
    
    var lang_node = '';
    if (link != '') {
      lang_node = '<a href="' + link + '" title="' + changeLang + '" aria-label="' + changeLang + '"><i id="change-language-button" class="fa fa-language"> ' + word + '</i></a>';
    }

    console.log(lang_node)
    var insertNode = document.getElementsByClassName('right-buttons');
    if (insertNode.length > 0) {
      var html = insertNode[0].innerHTML;
      insertNode[0].innerHTML = html + lang_node;
    }
  })()