var animEnd = "webkitAnimationEnd oanimationend msAnimationEnd animationend";
var $penWood = $('.pen_wood');
var $pen = $('.pen');
var $rubber = $('.pen_rubber');

 
$penWood.on('click', function(){
  $pen.addClass('active').one(animEnd, function(e) {
    $pen.removeClass('active');
  });
});


$rubber.on('click', function(){
  $rubber.addClass('rubber_active').delay(3000).queue(function(next) {
    $rubber.removeClass('rubber_active');
  });
});