var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');

for(var i = 0; i < hashes.length; i++)
{
    hash = hashes[i].split('=');
    if (hash[0] == 'nats'){
        var date = new Date();
        date.setTime(date.getTime()+(30*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
        document.cookie = "nats="+hash[1]+expires+"; path=/";
        break;
    }
}

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