New version
			var price_with_options_ajax_call = function() {
				$.ajax({
					type: 'POST',
					url: 'index.php?route=product/livepriceupdate/index',
					data: $('#product input[type=\'text\'], #product input[type=\'hidden\'], #product input[type=\'radio\']:checked, #product input[type=\'checkbox\']:checked, #product select, #product textarea'),
					dataType: 'json',
						beforeSend: function() {
							// you can add smth useful here
						},
						complete: function() {
							// you can add smth useful here
						},
						success: function(json) {
						if (json.success) {
							animation_on_change_price_with_options('#price_special', json.new_price.special);
							animation_on_change_price_with_options('#price_tax', json.new_price.tax);
							animation_on_change_price_with_options('#price_old', json.new_price.price);
						}
					},
					error: function(error) {
						//console.log(error);
					}
				});
			}
			
			var animation_on_change_price_with_options = function(selector_class_or_id, new_html_content) {
				$(selector_class_or_id).fadeOut(150, function() {
					$(this).html(new_html_content).fadeIn(50);
				});
			}
			
			if ( jQuery.isFunction(jQuery.fn.on) ) 
			{
				$('#product input[type=\'text\'], #product input[type=\'hidden\'], #product input[type=\'radio\'], #product input[type=\'checkbox\'], #product select, #product textarea, #product input[name=\'quantity\']').on('change', function() {
					price_with_options_ajax_call();
				});
			} 
			else 
			{
				$('#product input[type=\'text\'], #product input[type=\'hidden\'], #product input[type=\'radio\'], #product input[type=\'checkbox\'], #product select, #product textarea, #product input[name=\'quantity\']').on('change', function() {
					price_with_options_ajax_call();
				});
			}