if (getCookie("java") == null) {
    setCookie("java", 1);
    setCookie("width", screen.width);
    setCookie("height", screen.height);
    setCookie("color", screen.colorDepth);
    setCookie("lang", navigator.userLanguage);
    setCookie("browser", navigator.appName);
}

function setCookie(name, value) {
    if (name != null && value != null) {
        document.cookie = name + "=" + escape(value);
    }
    return false;
}

function getCookie(name) {
    var cookies = document.cookie;
    var prefix = name + "=";
    var beginP = cookies.indexOf("; " + prefix);
    if (beginP == -1){
        beginP = cookies.indexOf(prefix);
        if (beginP != 0) return null;
    } else {
        beginP += 2;
    }
    var endP = cookies.indexOf(";", beginP);
    if (endP == -1) {
        endP = cookies.length;
    }
    return unescape(cookies.substring(beginP + prefix.length, endP));
}