/*
 * JavaScript Pretty Date
 * Copyright (c) 2008 John Resig (jquery.com)
 * Licensed under the MIT license.
 * Modified 2011 Charles Smith (phase2technology.com)
 */

// Takes an ISO time and returns a string representing how
// long ago the date represents.
function prettyDate(time){
  var date = new Date((time || "").replace(/-/g,"/").replace(/[TZ]/g," ")),
    diff = (((new Date()).getTime() - date.getTime()) / 1000),
    day_diff = Math.floor(diff / 86400);

  if ( isNaN(day_diff) || day_diff < 0 || day_diff >= 31 )
    return;

  var monthNames = [ "January", "February", "March", "April", "May", "June",
                     "July", "August", "September", "October", "November", "December" ];

  return day_diff == 0 && (
      diff < 60 && "just now" ||
      diff < 120 && "1 minute ago" ||
      diff < 3600 && Math.floor( diff / 60 ) + " minutes ago" ||
      diff < 7200 && "1 hour ago" ||
      diff < 86400 && Math.floor( diff / 3600 ) + " hours ago") ||
    day_diff == 1 && "Yesterday" ||
    day_diff > 1 && monthNames[date.getMonth()] + " " + date.getDate() + ", " + date.getFullYear();

}

// If jQuery is included in the page, adds a jQuery plugin to handle it as well
if ( typeof jQuery != "undefined" )
  jQuery.fn.prettyDate = function(){
    return this.each(function(){
      var date = prettyDate(this.title);
      if ( date )
        jQuery(this).text( date );
    });
  };

(function($){
  $(document).ready(function(){
    $('.prettydate').prettyDate();
    setInterval(function(){ $('.prettydate').prettyDate(); }, 5000);
  });
}(jQuery));