//from http://twitter.com/javascripts/blogger.js

targetTwitter = 'twitter_update_list';

function twitterCallback2(twitters) {
    twitterCallbackSpecElement(twitters, targetTwitter);
}

//assumes user has setup their variables for
//twitterFeed1Element = <some ul element>
//twitterFeed2Element = <some ul element>
// and so on down to 10

function twitterFeed1(twitters) {
   twitterCallback2(twitters, twitterFeed1Element);
}
function twitterFeed2(twitters) {
   twitterCallback2(twitters, twitterFeed2Element);
}
function twitterFeed3(twitters) {
   twitterCallback2(twitters, twitterFeed3Element);
}


function twitterCallbackSpecElement(twitters, tweetsElement) {
//  alert('target :' + tweetsElement);
  var statusHTML = [];
  for (var i=0; i<twitters.length; i++){
    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> <a style="font-size:85%" href="http://twitter.com/'+username+'/statuses/'+twitters[i].id+'">'+relative_time(twitters[i].created_at)+'</a></li>');
  }
  twitterHtml =  statusHTML.join('');
  document.getElementById(tweetsElement).innerHTML = twitterHtml;
  //alert('twitter content :' + tweetsElement + ':' + twitterHtml);
}

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';
  }
}