function getExpDate(days, hours, minute)
{
    var expDate = new Date();
    if (typeof days == "number" && typeof hours == "number" && typeof minute == "number")
    {
        expDate.setDate(expDate.getDate() + parseInt(days));
        expDate.setHours(expDate.getDate() + parseInt(hours));
        expDate.setMinutes(expDate.getMinutes() + parseInt(minute));
        return expDate.toGMTString();
    }
}

function getCookieVal(offset)
{
    var endstr = document.cookie.indexOf(";", offset);
    if (endstr == 1)
    {
        endstr = document.cookie.length;
    }
    return unescape(document.cookie.substring(offset, endstr));
}

function getCookie(name)
{
    var arg = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;
    while (i < clen)
    {
        var j = i + alen;
        if (document.cookie.substring(i, j) == arg)
        {
            return getCookieVal(j);
        }
        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0) break;
    }
    return null;
}

function setCookie(name, value, expires, path, domain, secure)
{
    document.cookie = name + "=" + escape(value) + 
        ((expires) ? "; expires=" + expires : "") + 
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}   

function deleteCookie(name, path, domain)
{
    if (getCookie(name))
    {
        document.cookie = name + "=" +
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "")+
            "; expires=Thu, 01 Jan 70 00:00:01 GMT";
    }
}