function chLang(FROM, TO) {
	var url = parent.location.href;
	var url2;
	var i, n;
	var url, url2;
	
	for(i = 0; i <= url.length; i++) {
		n = i + FROM.length + 2;
		if (url.substring(i, n) == "/" + FROM + "/") {			
			url2 = url.substring(0, i) + "/" + TO + "/" + url.substring(n, url.length);
			break;
		}
	}
	//alert(url2);
	parent.location.href = url2;
}