function SetCookie(name, value, days) {
    var now = new Date();
    var expDate = new Date();
    if (days == null || days == 0) days = 1;
    //create date after no of "days" from now
    expDate.setTime(now.getTime() + 3600000 * 24 * days);

    //create cookie with name, value and expire date
    document.cookie = name + "=" + escape(value) + ";expires=" + expDate.toUTCString();
}

function ReadCookie(name) {
    if (name == "") return "";
    var strCookie = " " + document.cookie;
    var idx = strCookie.indexOf(" " + name + "=");
    if (idx == -1) idx = strCookie.indexOf(";" + name + "=");
    if (idx == -1) return "";

    var idx1 = strCookie.indexOf(";", idx + 1);
    if (idx1 == -1) idx1 = strCookie.length;
    return unescape(strCookie.substring(idx + name.length + 2, idx1));
}

function CheckCookie(divName) {
    SetCookie('testcookie', 'test', 1);
    var retuenValue = ReadCookie('testcookie');
    if (retuenValue == 'test') {
        //alert('support');
        document.getElementById(divName).style.display = 'none';
    }
    else {
        //alert('do not support');
        document.getElementById(divName).style.display = 'block';
    }
}