function setCookie(name, value, days, path, domain, secure) {

    var expires = null;
    
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        expires = date.toGMTString();
    }

    if (getCookie(name) != null)
        deleteCookie(name);

    var curCookie = name + "=" + escape(value) + ((expires) ? "; expires=" + expires : "") + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : "");
            
    document.cookie = curCookie;
}

function getCookie(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    }
    else begin += 2;

    var end = document.cookie.indexOf(";", begin);
    if (end == -1) end = dc.length;

    return unescape(dc.substring(begin + prefix.length, end));
}


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"; }
}