function showLang(langId){
	var langArr = ["cs","de","en"];
	for (var langIdx in langArr){
		var lang = langArr[langIdx];
		var cls = "hidden";
		if (lang==langId)
		{
			cls = "visible";
		}
		if (document.getElementById("iDesc_"+lang))
		{
			document.getElementById("iDesc_"+lang).className = cls;
		}
		if (document.getElementById("news_"+lang))
		{
			document.getElementById("news_"+lang).className = cls;
		}
	}
}