function twitterCallback(twitters) {
	var max_tweets = 1;
	var qualifying_tweets = 0;
  var statusHTML = [];
  for (var i=0; i<twitters.length && qualifying_tweets < max_tweets; i++){
  	var current_tweet = twitters[i];
  	var tweet_text = current_tweet.text;
	if (tweet_text.match(/#nd/)) {
		qualifying_tweets++;
		var username = current_tweet.user.screen_name;
		var status = tweet_text.replace(/#[^\s]*/g, "").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> <span class="tweet_info"><a class="twit_timestamp_link" href="http://twitter.com/' + username + '/statuses/' + current_tweet.id + '">' + relative_time(current_tweet.created_at) + '</a> <span class="twitter_attribution_from">from</span> <span class="twitter_attribution_twitter">Twitter</span></span></span></li>');
	}
  }
  if (statusHTML.length > 0) {
  	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 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 < (60*60)) {
    return (parseInt(delta / 60)).toString() + ' minutes ago';
  } else if(delta < (120*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';
  }
}