function change_lang(lang, parameters) {
	var chi_url = "";
	var eng_url = "";
	var filename = location.href;
	filename = filename.substring(filename.lastIndexOf("/") + 1);

	tc_url = '../tc/' + filename;
	sc_url =  '../sc/' + filename ;
	en_url =  '../en/' + filename ;

	if (lang == 'en') {
		self.location.href = en_url;
	}
	else if (lang == 'sc') {
		self.location.href = sc_url;
	}
	else {
		self.location.href = tc_url;
	}
}

function gup(name) {
	name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
	var regexS = "[\\?&]"+name+"=([^&#]*)";
	var regex = new RegExp( regexS );
	var results = regex.exec( window.location.href );
	if (results == null) {
		return "";
	}
	else {
		return results[1];
	}
}