function SetCookie() {
    if (arguments.length < 2) { return; }
    var n = arguments[0];
    var v = arguments[1];
    var d = 0;
    if (arguments.length > 2) { d = parseInt(arguments[2]); }
    var exp = '';
    if (d > 0) {
        var now = new Date();
        then = now.getTime() + (d * 24 * 60 * 60 * 1000);
        now.setTime(then);
        exp = '; expires=' + now.toGMTString();
    }
    document.cookie = n + "=" + escape(String(v)) + '; path=/' + exp;
}

function ReadCookie(n) {
    var cookiecontent = new String();
    if (document.cookie.length > 0) {
        var cookiename = n + '=';
        var cookiebegin = document.cookie.indexOf(cookiename);
        var cookieend = 0;
        if (cookiebegin > -1) {
            cookiebegin += cookiename.length;
            cookieend = document.cookie.indexOf(";", cookiebegin);
            if (cookieend < cookiebegin) { cookieend = document.cookie.length; }
            cookiecontent = document.cookie.substring(cookiebegin, cookieend);
        }
    }
    return unescape(cookiecontent);
}