var count=0;
var current_num=0;

function changeTweet()
{	var fix_count = count-1;
	if(count>0)
	{		
		var hide_twit = document.getElementById("tweet"+current_num);
		hide_twit.style.display = 'none';
					
		var new_num = current_num + 1;
		
		if(new_num>fix_count){
			new_num=0;			
		}
		//alert(new_num);
		var show_twit = document.getElementById("tweet"+new_num);
		show_twit.style.display = 'list-item';
		current_num = new_num;
	}else{
		//alert('count is zero');
	}
}

setInterval("changeTweet();", 10000);

function twitterCallback2(twitters) {
  var statusHTML = [];
  count = twitters.length;
  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>';
    });
    if(i==0)
    {
    	statusHTML.push('<li id="tweet'+i+'"><span>'+status+'</span> <a style="color:#000;font-size:85%;" href="http://twitter.com/'+username+'/statuses/'+twitters[i].id+'">'+relative_time(twitters[i].created_at)+'</a></li>');
    }
    else
    {
    	statusHTML.push('<li id="tweet'+i+'" style="display:none;"><span>'+status+'</span> <a style="color:#000;font-size:85%;" href="http://twitter.com/'+username+'/statuses/'+twitters[i].id+'">'+relative_time(twitters[i].created_at)+'</a></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 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';
  }
}