function change_lang(lang) {
	var parts = document.location.hostname.split('.');
	return document.location.protocol + "//www." + parts[parts.length - 2] + "." + lang + document.location.pathname;
}
function change_lang_sub(lang) {
    var parts = document.location.hostname.split('.');
    return document.location.protocol + "//" + lang + "." + parts[parts.length - 2] + ".com" + document.location.pathname;
}
function change_domain(lang) {
	if (lang === "cn") {
        return document.location.protocol + "//www.acfx-china.com" + document.location.pathname;
	}      
	else if (lang === "com") {
        return document.location.protocol + "//www.acfx.com" + document.location.pathname;
    }
    else {
		/*var parts = document.location.hostname.split('.');*/
        return document.location.protocol + "//" + lang + ".acfx.com" + document.location.pathname;
    }     
}