$(function() {
  var limit = 5            // how many tweets to list
  var login = 'johnreilly' // your username

  $.getJSON('http://twitter.com/statuses/user_timeline/' + login + '.json?count=' + limit + '&callback=?', function(data) {
    $.each(data, function(i, item){
      $('#tweets').append('<li>'
        + "<span class='tweet_text'>" + item.text + "</span> "
        + "<span class='created_at'>" + link_up(relative_time(item.created_at), item.id) + "</span></li>");
    })
  })        
})
function link_up(text, id) {
  return '<a href="http://twitter.com/johnreilly/status/' + id + '">' + text + '</a>'
}

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);
  
  var r = '';
  if (delta < 60) {
    r = 'a minute ago';
  } else if(delta < 120) {
    r = 'couple of minutes ago';
  } else if(delta < (45*60)) {
    r = (parseInt(delta / 60)).toString() + ' minutes ago';
  } else if(delta < (90*60)) {
    r = 'an hour ago';
  } else if(delta < (24*60*60)) {
    r = '' + (parseInt(delta / 3600)).toString() + ' hours ago';
  } else if(delta < (48*60*60)) {
    r = '1 day ago';
  } else {
    r = (parseInt(delta / 86400)).toString() + ' days ago';
  }
  
  return r;
}