text: /**
   * downCount: Simple Countdown clock with offset
   * Author: Sonny T. <hi@sonnyt.com>, sonnyt.com
   */
  
  (function ($) {
  
      $.fn.downCount = function (options, callback) {
          var settings = $.extend({
                  date: null,
                  offset: null
              }, options);
  
          // Throw error if date is not set
          if (!settings.date) {
              $.error('Date is not defined.');
          }
  
          // Throw error if date is set incorectly
          if (!Date.parse(settings.date)) {
              $.error('Incorrect date format, it should look like this, 12/24/2012 12:00:00.');
          }
  
          // Save container
          var container = this;
  
          /**
           * Change client's local date to match offset timezone
           * @return {Object} Fixed Date object.
           */
          var currentDate = function () {
              // get client's current date
              var date = new Date();
  
              // turn date to utc
              var utc = date.getTime() + (date.getTimezoneOffset() * 60000);
  
              // set new Date object
              var new_date = new Date(utc + (3600000*settings.offset))
  
              return new_date;
          };
  
          /**
           * Main downCount function that calculates everything
           */
          function countdown () {
              var target_date = new Date(settings.date), // set target date
                  current_date = currentDate(); // get fixed current date
  
              // difference of dates
              var difference = target_date - current_date;
  
              // if difference is negative than it's pass the target date
              if (difference < 0) {
                  // stop timer
                  clearInterval(interval);
  
                  if (callback && typeof callback === 'function') callback();
  
                  return;
              }
  
              // basic math variables
              var _second = 1000,
                  _minute = _second * 60,
                  _hour = _minute * 60,
                  _day = _hour * 24;
  
              // calculate dates
              var days = Math.floor(difference / _day),
                  hours = Math.floor((difference % _day) / _hour),
                  minutes = Math.floor((difference % _hour) / _minute),
                  seconds = Math.floor((difference % _minute) / _second);
  
                  // fix dates so that it will show two digets
                  days = (String(days).length >= 2) ? days : '0' + days;
                  hours = (String(hours).length >= 2) ? hours : '0' + hours;
                  minutes = (String(minutes).length >= 2) ? minutes : '0' + minutes;
                  seconds = (String(seconds).length >= 2) ? seconds : '0' + seconds;
  
              // based on the date change the refrence wording
              var ref_days = (days === 1) ? 'Ngày' : 'Ngày',
                  ref_hours = (hours === 1) ? 'Giờ' : 'Giờ',
                  ref_minutes = (minutes === 1) ? 'Phút' : 'Phút',
                  ref_seconds = (seconds === 1) ? 'Giây' : 'Giây';
  
              // set to DOM
              container.find('.days').text(days);
              container.find('.hours').text(hours);
              container.find('.minutes').text(minutes);
              container.find('.seconds').text(seconds);
  
              container.find('.days_ref').text(ref_days);
              container.find('.hours_ref').text(ref_hours);
              container.find('.minutes_ref').text(ref_minutes);
              container.find('.seconds_ref').text(ref_seconds);
          };
  
          // start
          var interval = setInterval(countdown, 1000);
      };
  
  })(jQuery);
  