function setCookie(name, value)
{
    var date = new Date();
    date.setTime(date.getTime() + (365 * 24 * 60 * 60 * 1000));
    var expires = "; expires=" + date.toGMTString();
    document.cookie = name + "=" + value + expires + "; path=/";
}

function getCookie(name)
{
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++)
    {
        var c = ca[i];
        while (c.charAt(0) == ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
    return null;
}

function deleteCookie(name)
{
    setCookie(name, null);
}