/**
 * 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").
 *
 * @name timeago
 * @version 0.11.4
 * @requires jQuery v1.2.3+
 * @author Ryan McGeary
 * @license MIT License - http://www.opensource.org/licenses/mit-license.php
 *
 * For usage and examples, visit:
 * http://timeago.yarp.com/
 *
 * Copyright (c) 2008-2012, Ryan McGeary (ryan -[at]- mcgeary [*dot*] org)
 *
 * Edit by Alper Mutlu TOKSÖZ
 */
 
(function($) {
$.timeago = function(timestamp) {
    if (timestamp instanceof Date) {
        return inWords(timestamp);
    } else if (typeof timestamp === "string") {
        return inWords($.timeago.parse(timestamp));
    } else if (typeof timestamp === "number") {
        return inWords(new Date(timestamp));
    } else {
        return inWords($.timeago.datetime(timestamp));
    }
};
var $t = $.timeago;

$.extend($.timeago, {
    settings: {
        refreshMillis: 1,
        allowFuture: true,
        strings: {
            prefixAgo: null,
            prefixFromNow: null,
            suffixAgo: "önce",
            suffixFromNow: "şimdi",
            seconds: "bir kaç saniye",
            minute: "yaklaşık bir dakika",
            minutes: "%d dakika",
            hour: "yaklaşık bir saat",
            hours: "yaklaşık %d saat",
            day: "bir gün",
            days: "%d gün",
            month: "yaklaşık bir ay",
            months: "%d ay",
            year: "yaklaşık bir yıl",
            years: "%d yıl",
            wordSeparator: " ",
            numbers: []
        }
    },
    inWords: function(distanceMillis) {
        var $l = this.settings.strings;
        var prefix = $l.prefixAgo;
        var suffix = $l.suffixAgo;
        if (this.settings.allowFuture) {
            if (distanceMillis < 0) {
                prefix = $l.prefixFromNow;
                suffix = $l.suffixFromNow;
            }
        }

        var seconds = Math.abs(distanceMillis) / 1000;
        var minutes = seconds / 60;
        var hours = minutes / 60;
        var days = hours / 24;
        var years = days / 365;

        function substitute(stringOrFunction, number) {
            var string = $.isFunction(stringOrFunction) ? stringOrFunction(number, distanceMillis) : stringOrFunction;
            var value = ($l.numbers && $l.numbers[number]) || number;
            return string.replace(/%d/i, value);
        }

        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($l.hours, Math.round(hours)) ||
        hours < 42 && substitute($l.day, 1) ||
        days < 30 && substitute($l.days, Math.round(days)) ||
        days < 45 && substitute($l.month, 1) ||
        days < 365 && substitute($l.months, Math.round(days / 30)) ||
        years < 1.5 && substitute($l.year, 1) ||
        substitute($l.years, Math.round(years));

        var separator = $l.wordSeparator === undefined ?" " : $l.wordSeparator;
        return $.trim([prefix, words, suffix].join(separator));
    },
    parse: function(iso8601) {
        var s = $.trim(iso8601);
        s = s.replace(/\.\d+/,""); // remove milliseconds
        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);
    },
    datetime: function(elem) {
        var iso8601 = $t.isTime(elem) ? $(elem).attr("datetime") : $(elem).attr("title");
        return $t.parse(iso8601);
    },
    isTime: function(elem) {
        // jQuery's `is()` doesn't play well with HTML5 in IE
        return $(elem).get(0).tagName.toLowerCase() === "time"; // $(elem).is("time");
    }
});

$.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 data = prepareData(this);
    if (!isNaN(data.datetime)) {
        $(this).text(inWords(data.datetime));
    }
    return this;
}

function prepareData(element) {
    element = $(element);
    if (!element.data("timeago")) {
        element.data("timeago", { datetime: $t.datetime(element) });
        var text = $.trim(element.text());
        if (text.length > 0 && !($t.isTime(element) && element.attr("title"))) {
            element.attr("title", text);
        }
    }
    return element.data("timeago");
}

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

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

// fix for IE6 suckage
    document.createElement("abbr");
    document.createElement("time");
}(jQuery));

$.timeago.settings.allowFuture = true;
    $("#prog_date").text($.timeago("2012-05-27 11:27:40"));

<span id="prog_date"></span>