function twitterCallback2(twitters) {
  var statusHTML = [];
  statusHTML.push('<ul>');
  for (var i=0; i<twitters.length; i++){
    var username = twitters[i].user.screen_name;
    statusHTML.push('<li><p>'+twitters[i].text+' <span>'+relative_time(twitters[i].created_at)+'</span></p></li>');
  }
  statusHTML.push('</ul>');
  document.getElementById('tweet').innerHTML = statusHTML.join('');
}

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 < 120) {
    return 'hace un minuto';
  } else if(delta < (60*60)) {
    return  'hace ' + (parseInt(delta / 60)).toString() + ' minutos';
  } else if(delta < (120*60)) {
    return 'hace una hora';
  } else if(delta < (24*60*60)) {
    return 'hace ' + (parseInt(delta / 3600)).toString() + ' horas';
  } else if(delta < (48*60*60)) {
    return 'hace 1 día';
  } else {
    return 'hace ' + (parseInt(delta / 86400)).toString() + ' días';
  }
}