function SwitchLang(o,l)
{
    var loc, lang;
	switch (o)
	{
		case 'en':
			lang = '/zh_hk/';
			break;
		case 'zh_hk':
			lang = '/en/';
			break;
		default:
			lang = '/en/';
	}
    loc = window.location.href;
	rep = '/'+o+'/';
//	alert (o);
//	alert (l);
//	alert (rep);
//	alert (loc);
	loc = loc.replace(rep, lang);
//	alert (loc);
	window.location = loc;
}