function switchLanguage(lang1, lang2) {
	var path = window.location.pathname;
	var pathBegin;
	var pathEnd;
	var pathNew;
	var newLang;
	var posLang;
	var lenLang = 0;
	var posLang1 = path.lastIndexOf("/"+lang1+"/");
	var posLang2 = path.lastIndexOf("/"+lang2+"/");
	if (posLang1 >= 0) {
		posLang = posLang1;
		lenLang = lang1.length;
		newLang = lang2;
	}
	if (posLang2 >= 0) {
		posLang = posLang2;
		lenLang = lang2.length;
		newLang = lang1;
	}
	if (posLang >= 0 && lenLang > 0) {
		pathBegin = path.substring(0, posLang);
		pathEnd = path.substring(posLang + lenLang + 2);
		pathNew = pathBegin + "/" + newLang + "/" + pathEnd;
		window.location.href = pathNew;
	}
}