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

// Takes an ISO time and returns a string representing how
// long ago the date represents.

var timezoneOffset = (new Date()).getTimezoneOffset() * 60000;

function prettyDate(time){
    var date = new Date(time); //.replace(/-/g,"/").replace(/[TZ]/g," "));
    date = new Date(date.getTime() - timezoneOffset);
    var diff = (((new Date()).getTime() - date.getTime()) / 1000);
    var day_diff = Math.floor(diff / 86400);
    //console.log('day_diff', date, date.getTime(), (new Date()).getTime(), diff, day_diff, timezoneOffset);
	//if ( isNaN(day_diff) || day_diff < 0 || day_diff >= 31 )
	//return;
	
	if( day_diff < 0 ) {
		return "just now";
	}
			
	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 < 7 && day_diff + " days ago" ||
		day_diff < 31 && Math.ceil( day_diff / 7 ) + " weeks ago" ||
	    time;
}

// 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 );
		});
	};