/*
  * timeago: a jQuery plugin, version: 0.7.1 (2009-02-18)
  * @requires jQuery v1.2 or later
  *
  * Timeago is a jQuery plugin that makes it easy to support automatically
  * updating fuzzy timestamps (e.g. "4 minutes ago" or "about 1 day ago").
  *
  * For usage and examples, visit:
  * http://timeago.yarp.com/
  *
  * Licensed under the MIT:
  * http://www.opensource.org/licenses/mit-license.php
  *
  * Copyright (c) 2008-2009, Ryan McGeary (ryanonjavascript -[at]- mcgeary [*dot*] org)
  */
 (function($) {
   $.timeago = function(timestamp) {
     if (timestamp instanceof Date) return inWords(timestamp);
     else if (typeof timestamp == "string") return inWords($.timeago.parse(timestamp));
     else return inWords($.timeago.parse($(timestamp).attr("title")));
   };
   var $t = $.timeago;

   $.extend($.timeago, {
     settings: {
       refreshMillis: 30000,
       allowFuture: false,
       strings: {
         prefixAgo: null,
         prefixFromNow: null,
         suffixAgo: "ago",
         suffixFromNow: "from now",
         ago: null, // DEPRECATED, use suffixAgo
         fromNow: null, // DEPRECATED, use suffixFromNow
         seconds: "Seconds",
         minute: "1 minute",
         minutes: "%d minutes",
         hour: "About an hour",
         hours: "About %d hours",
         day: "A day",
         days: "%d days",
         month: "About a month",
         months: "%d months",
         year: "About a year",
         years: "%d years"
       }
     },
     inWords: function(distanceMillis) {
       var $l = this.settings.strings;
       var prefix = $l.prefixAgo;
       var suffix = $l.suffixAgo || $l.ago;
       if (this.settings.allowFuture) {
         if (distanceMillis < 0) {
           prefix = $l.prefixFromNow;
           suffix = $l.suffixFromNow || $l.fromNow;
         }
         distanceMillis = Math.abs(distanceMillis);
       }

       var seconds = distanceMillis / 1000;
       var minutes = seconds / 60;
       var hours = minutes / 60;
       var days = hours / 24;
       var years = days / 365;

       var words = seconds < 45 && substitute($l.seconds, Math.round(seconds)) ||
         seconds < 90 && substitute($l.minute, 1) ||
         minutes < 45 && substitute($l.minutes, Math.round(minutes)) ||
         minutes < 90 && substitute($l.hour, 1) ||
         hours < 24 && substitute($l.hours, Math.round(hours)) ||
         hours < 48 && substitute($l.day, 1) ||
         days < 30 && substitute($l.days, Math.floor(days)) ||
         days < 60 && substitute($l.month, 1) ||
         days < 365 && substitute($l.months, Math.floor(days / 30)) ||
         years < 2 && substitute($l.year, 1) ||
         substitute($l.years, Math.floor(years));

       return $.trim([prefix, words, suffix].join(" "));
     },
     parse: function(iso8601) {
       var s = $.trim(iso8601);
       s = s.replace(/-/,"/").replace(/-/,"/");
       s = s.replace(/T/," ").replace(/Z/," UTC");
       s = s.replace(/([\+-]\d\d)\:?(\d\d)/," $1$2"); // -04:00 -> -0400
       return new Date(s);
     }
   });

   $.fn.timeago = function() {
     var self = this;
     self.each(refresh);

     var $s = $t.settings;
     if ($s.refreshMillis > 0) {
       setInterval(function() { self.each(refresh); }, $s.refreshMillis);
     }
     return self;
   };

   function refresh() {
     var date = $t.parse(this.title);
     if (!isNaN(date)) {
       $(this).text(inWords(date));
     }
     return this;
   }

   function inWords(date) {
     return $t.inWords(distance(date));
   }

   function distance(date) {
     return (new Date().getTime() - date.getTime());
   }

   function substitute(stringOrFunction, value) {
     var string = $.isFunction(stringOrFunction) ? stringOrFunction(value) : stringOrFunction;
     return string.replace(/%d/i, value);
   }

   // fix for IE6 suckage
   if ($.browser.msie && $.browser.version < 7.0) {
     document.createElement('abbr');
   }
 })(jQuery);