old_contents: (function ($) {
    $('.navbar-toggle').on('click', function () {
      var $navbar = $($(this).data('target'));
      $navbar.slideToggle(150);
    });
  
    // Page section on contribute page
  
    $('.toggle-page-section').on('click', function (e) {
      e.preventDefault();
      var $link = $(this);
  
      $link.parent().next('.page-section').stop().slideToggle(300, function () {
        $link.toggleClass('active');
      });
    });
  
    // Tabs on download page
  
    var $tabs = $('.tab-list li');
    var $tabPanes = $('.tab-pane');
  
    $tabs.on('click', function (e) {
      e.preventDefault();
  
      $tabs.removeClass('active').filter(this).addClass('active');
      $tabPanes.removeClass('active').filter($(this).find('a').attr('href')).addClass('active');
    });
  
    if (window.location.hash) {
      $tabs.find('a[href="' + window.location.hash + '"]').trigger('click');
    }
  
    // Form on downloads page
  
    Parse.initialize("ZFqEMoCQSm0K4piYYdstraJDOl0a80tJB7R0tR49", "SdqL88SikiiftwBjEGfRb4SmbghTIycZ2kfy7Jb0");
  
    $('.subscribe-form').on('submit', function (e) {
      e.preventDefault();
  
      var $form = $(this);
      var data = $form.serializeArray();
      var Subscription = Parse.Object.extend('Subscription');
      var subscription = new Subscription();
  
      for (var i = 0; i < data.length; i++) {
        subscription.set(data[i].name, data[i].value);
      }
  
      subscription.save(null, {
        success: function () {
          $form.fadeOut(300, function () {
            $('.success-message').fadeIn(300);
          });
        },
        error: function () {
          $form.fadeOut(300, function () {
            $('.error-message').fadeIn(300);
          });
        }
      });
    });
  }(jQuery));
  
new_contents: (function ($) {
    $('.navbar-toggle').on('click', function () {
      var $navbar = $($(this).data('target'));
      $navbar.slideToggle(150);
    });
  
    // Page section on contribute page
  
    $('.toggle-page-section').on('click', function (e) {
      e.preventDefault();
      var $link = $(this);
  
      $link.parent().next('.page-section').stop().slideToggle(300, function () {
        $link.toggleClass('active');
      });
    });
  
    // Tabs on download page
  
    var $tabs = $('.tab-list li');
    var $tabPanes = $('.tab-pane');
  
    $tabs.on('click', function (e) {
      e.preventDefault();
  
      var tabId = $(this).find('a').attr('href');
  
      $tabs.removeClass('active').filter(this).addClass('active');
      $tabPanes.removeClass('active').filter(tabId).addClass('active');
  
      if (history.pushState) {
        history.pushState(null, null, tabId);
      } else {
        location.hash = tabId;
      }
    });
  
    if (location.hash) {
      $tabs.find('a[href="' + location.hash + '"]').trigger('click');
    }
  
    // Form on downloads page
  
    Parse.initialize("ZFqEMoCQSm0K4piYYdstraJDOl0a80tJB7R0tR49", "SdqL88SikiiftwBjEGfRb4SmbghTIycZ2kfy7Jb0");
  
    $('.subscribe-form').on('submit', function (e) {
      e.preventDefault();
  
      var $form = $(this);
      var data = $form.serializeArray();
      var Subscription = Parse.Object.extend('Subscription');
      var subscription = new Subscription();
  
      for (var i = 0; i < data.length; i++) {
        subscription.set(data[i].name, data[i].value);
      }
  
      subscription.save(null, {
        success: function () {
          $form.fadeOut(300, function () {
            $('.success-message').fadeIn(300);
          });
        },
        error: function () {
          $form.fadeOut(300, function () {
            $('.error-message').fadeIn(300);
          });
        }
      });
    });
  }(jQuery));
  
subject: change hash on tab click