var bLangCanChange = true;

function ChangeLang() {
	var sCurPath = document.location.href;

	if (! bLangCanChange) {
		if (sCurPath.indexOf("english") > -1) {
			alert ("You are not recommended to change language at this step.");
		} else {
			alert ("我們建議不要在這步驟切換語言。");
		}
		return;
	}

	if (sCurPath.indexOf("english") > -1) {
		sCurPath = sCurPath.replaceAll("english", "tchinese").replaceAll("language%3DE", "language%3DC");
	} else {
		sCurPath = sCurPath.replaceAll("tchinese", "english").replaceAll("language%3DC", "language%3DE");
	}

	// alert(sCurPath);

	document.location.href = sCurPath;
}