// Scroll to top
jQuery(document).ready(function() {
	jQuery(".to_top").click(function () {
		jQuery('html, body').animate({scrollTop:0}, 'fast');
	});
});

jQuery(document).ready(function() {
	var url = "http://twitter.com/statuses/user_timeline/identa.json?count=1&callback=?";
	jQuery.getJSON(url, function(data){
		jQuery.each(data, function(i, item) {
			jQuery("#twitter_update_list").append(
				"<li>" + twitter_link(item.text) + "<span> " + relative_time(item.created_at) + "</span></li>");
		});
	});
});

function twitter_link(tweet) {
    var status = tweet.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>';
    });
	
	return status;
}

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';
  }
}