function relative_time(time_value) {
    var values = time_value.split(" ");
    time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3];
    var parsed_date = Date.parse(time_value);
    var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
    var delta = parseInt((relative_to.getTime() - parsed_date) / 1000);
    delta = delta + (relative_to.getTimezoneOffset() * 60);
    
    if (delta < 60) {
        return 'less than a minute ago';
        } else if(delta < 120) {
        return 'about a minute ago';
        } else if(delta < (45*60)) {
        return (parseInt(delta / 60)).toString() + ' minutes ago';
        } else if(delta < (90*60)) {
        return 'about an hour ago';
        } else if(delta < (24*60*60)) {
        return 'about ' + (parseInt(delta / 3600)).toString() + ' hours ago';
        } else if(delta < (48*60*60)) {
        return '1 day ago';
        } else {
        return (parseInt(delta / 86400)).toString() + ' days ago';
        }
}

function twitterCallback(obj) {
    var id = obj[0].user.id;
    document.getElementById('my_twitter_status').innerHTML = obj[0].text;
    document.getElementById('my_twitter_status_time').innerHTML = relative_time(obj[0].created_at);
}