(function ($) {
    'use strict';



  // scroll up
    if($('.prgoress_indicator path').length){
        var progressPath = document.querySelector('.prgoress_indicator path');
        var pathLength = progressPath.getTotalLength();
        progressPath.style.transition = progressPath.style.WebkitTransition = 'none';
        progressPath.style.strokeDasharray = pathLength + ' ' + pathLength;
        progressPath.style.strokeDashoffset = pathLength;
        progressPath.getBoundingClientRect();
        progressPath.style.transition = progressPath.style.WebkitTransition = 'stroke-dashoffset 10ms linear';
        var updateProgress = function () {
          var scroll = $(window).scrollTop();
          var height = $(document).height() - $(window).height();
          var progress = pathLength - (scroll * pathLength / height);
          progressPath.style.strokeDashoffset = progress;
        }
        updateProgress();
        $(window).on('scroll', updateProgress);
        var offset = 250;
        var duration = 550;
        jQuery(window).on('scroll', function () {
          if (jQuery(this).scrollTop() > offset) {
            jQuery('.prgoress_indicator').addClass('active-progress');
          } else {
            jQuery('.prgoress_indicator').removeClass('active-progress');
          }
        });
        jQuery('.prgoress_indicator').on('click', function (event) {
          event.preventDefault();
          jQuery('html, body').animate({ scrollTop: 0 }, duration);
          return false;
        });
    }
})(jQuery);