function setcookie(name, path, value) {
    var days = 365;
    var exp = new date();
    exp.settime(exp.gettime() + days * 24 * 60 * 60 * 1000);
    document.cookie = name + "=" + escape(value) + ";path=" + path + ";expires=" + exp.togmtstring();
}
function getcookie(name) {
    var arr = document.cookie.match(new regexp("(^| )" + name + "=([^;]*)(;|$)"));
    if (arr != null) return unescape(arr[2]); return null;

}
function delcookie(name) {
    var exp = new date();
    exp.settime(exp.gettime() - 1);
    var cval = getcookie(name);
    if (cval != null) document.cookie = name + "=" + cval + ";expires=" + exp.togmtstring();
}


//从键值对型字符串中取得键为key的value 
//eg. arg="name=abc" key="name" 
//则返回abc否则返回空字符 
function getvalue(arg, key) {
    if (arg.indexof('=') != -1) {
        var kv = arg.split('=');
        if (kv[0] == key) {
            return kv[1];
        }
    }
    return '';
}
//从查询字符串中取得键为key的value 
//eg. querystring="?name=abc" key="name" 
//则返回abc否则返回空字符 
function getquerystringvalue(key) {
    var get = window.location.search;
    if (get.charat(0) == '?') {
        get = get.substr(1);
    } else {
        return;
    }
    if (get.indexof('&') == -1) {
        return getvalue(get, key);
    } else {
        var args = get.split('&');
        for (var arg in args) {
            var v = getvalue(args[arg], key);
            if (v.length > 0) {
                return v;
            }
        }
    }
}



var adsfrm = getquerystringvalue("afrm");
if (adsfrm == "" || adsfrm == undefined) {
    var mycookie = getcookie("refercndns");
    if (mycookie == null || mycookie == "" || mycookie == undefined) {
        var thereferer = document.referrer;
        var thelocation = document.location;
        setcookie("locationurl", '/', thelocation);
        if (thereferer != "") {
            setcookie("refercndns", '/', thereferer);
        }
        else {
            setcookie("refercndns", '/', "directcndns");
        }
    }
}
else {
    setcookie("adsfrmcndns", '/', adsfrm);
}

var ispromoteui = getquerystringvalue("authunionkey");
if (ispromoteui == "" || ispromoteui == undefined) {
    var mycookies = getcookie("authunionkey");
    if (mycookies == null || mycookies == "" || mycookies == undefined) {
        if (ispromoteui != "") {
            setcookie("authunionkey", '/', ispromoteui);
        }
    }
}
else {
    setcookie("authunionkey", '/', ispromoteui);
}