function addToCart(product_id, quantity, option_id, option_value) {
        quantity = typeof(quantity) != 'undefined' ? quantity : 1;
        option_value = typeof(option_value) != 'undefined' ? option_value : 0;
        option_id = typeof(option_id) != 'undefined' ? option_id : 0;
        jQuery.ajax({
            url: 'index.php?route=checkout/cart/add',
            type: 'post',
            cache: false,
            data: 'product_id=' + product_id + '&quantity=' + quantity + '&option_id=' + option_id + '&option_value=' + option_value+'&rnd=' + Math.random(),
            dataType: 'json',
            success: function(jsonObj) {
                $('.success, .warning, .attention, .information, .error').remove();

                if (jsonObj['redirect']) {
                    location = jsonObj['redirect'];
                }

                if (jsonObj['success']) {
                    $('#notification').html('<div class="success" style="display: none;">' + jsonObj['success'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');

                    $('.success').fadeIn('slow');

                    $('#cart-total').html(jsonObj['total']);

                    $('html, body').animate({ scrollTop: 0 }, 'slow');
                }
            }
        });
    }

{"success":"Added to cart!","total":"1 product(s) - 52,48u043bu0432."}

jsonObj: Object
success: "Added to cart!"
total: "1 product(s) - 52.48лв."
__proto__: Object

$('base').attr('href')

option_value = typeof(option_value) != 'undefined' ? option_value : 0;
    option_id = typeof(option_id) != 'undefined' ? option_id : 0;
    var base = jQuery('base').attr('href');
    jQuery.ajax({
        url: base + 'index.php?route=checkout/cart/add',
        type: 'post',