function twitterCallback(twitters) {
  var item_max = 1;
  var cnt = 1;
  var statusHTML = [];
  for (var i=0; i<twitters.length; i++){
    if (twitters[i].text.match(/^@/)) {
      continue;
    }
    if (cnt > item_max) {
      break;
    }
    cnt++; 
    var username = twitters[i].user.screen_name;
    var status = twitters[i].text.replace(/((https?|s?ftp|ssh)\:\/\/[^"\s\<\>]*[^.,;'">\:\s\<\>\)\]\!])/g, function(url) {
      return '<a href="'+url+'">'+url+'</a>';
    }).replace(/\B@([_a-z0-9]+)/ig, function(reply) {
      return  reply.charAt(0)+'<a href="http://twitter.com/'+reply.substring(1)+'">'+reply.substring(1)+'</a>';
    });
    statusHTML.push('<li><span>'+status+'</span>&nbsp;&nbsp;'+relative_time(twitters[i].created_at)+'</li>');
  }
  document.getElementById('twitter_update_list').innerHTML = statusHTML.join('');
}
function relative_time(time_value) {
  var values = time_value.split(" ");
  time_value = values[1] + " " + values[2] + ", " + values[5] + " " + values[3];
  var date = new Date(time_value);
  date.setHours(date.getHours() + 9);
  var mon  = '0' + (date.getMonth() + 1);
  mon = mon.substr(mon.length - 2);
  var day  = '0' + date.getDate();
  day = day.substr(day.length - 2);
  var hour  = '0' + date.getHours();
  hour = hour.substr(hour.length - 2);
  var minute  = '0' + date.getMinutes();
  minute = minute.substr(minute.length - 2);
  var out_date = mon + "/" + day + " " + hour + ":" + minute;
  return out_date;
}