проблема с кнопкой "в корзину" - JoomShopping

 <?php if (!$this->hide_buy){?>                         
        <table class="prod_buttons">
        <tr>
            <td class="prod_qty">
                <?php print _JSHOP_QUANTITY?>:&nbsp;
            </td>
            <td class="prod_qty_input">
                <input type = "text" name = "quantity" id = "quantity" onkeyup="reloadPrices();" class = "inputbox" style = "width: 20px" value = "<?php print $this->default_count_product?>" />
            </td>        
            <td class = "buttons">            
                <input type = "submit" class = "button" value = "<?php print _JSHOP_ADD_TO_CART?>" onclick="jQuery('#to').val('cart');" />
                <?php if ($this->enable_wishlist){?>
                    <input type = "submit" class = "button" value = "<?php print _JSHOP_ADD_TO_WISHLIST?>" onclick="jQuery('#to').val('wishlist');" />
                <?php }?>
            </td>
            <td id = "jshop_image_loading" style = "display:none"></td>
        </tr>
        </table>

.jshop .prod_buttons{
    
}

	   <?php if ($this->config->product_show_qty_stock){?>
        <div class="qty_in_stock"><?php print _JSHOP_QTY_IN_STOCK?>: <span id="product_qty"><?php print sprintQtyInStock($this->product->qty_in_stock);?></span></div>
    <?php }?>
    
    <?php print $this->_tmp_product_html_before_buttons;?>
    <?php if (!$this->hide_buy){?>                         
        <ul class="prod_buttons">
            <li class="prod_qty">
                <?php print _JSHOP_QUANTITY?>:&nbsp;
            </li>
            <li class="prod_qty_input">
                <input type = "text" name = "quantity" id = "quantity" onkeyup="reloadPrices();" class = "inputbox" style = "width: 20px" value = "<?php print $this->default_count_product?>" /><?php print $this->_tmp_qty_unit;?>
            </li>        
            <li class = "buttons">            
                <input type = "submit" class = "button" value = "<?php print _JSHOP_ADD_TO_CART?>" onclick="jQuery('#to').val('cart');" />
                <?php if ($this->enable_wishlist){?>
                    <input type = "submit" class = "button" value = "<?php print _JSHOP_ADD_TO_WISHLIST?>" onclick="jQuery('#to').val('wishlist');" />
                <?php }?>
                <?php print $this->_tmp_product_html_buttons;?>
            </li>
            <li id = "jshop_image_loading" style = "display:none"></li>
        </ul>
    <?php }?>
    <?php print $this->_tmp_product_html_after_buttons;?>
  
<input type="hidden" name="to" id='to' value="cart" />
<input type = "hidden" name = "product_id" id = "product_id" value = "<?php print $this->product->product_id?>" />
<input type = "hidden" name = "category_id" id = "category_id" value = "<?php print $this->category_id?>" />
</div>

    <?php print $this->product->_tmp_var_bottom_price;?>
    <?php if ($this->product->product_old_price > 0){?>
            <div class="old_price">
                <?php print _JSHOP_OLD_PRICE?> <span class="old_price"><?php print formatprice($this->product->product_old_price)?></span>
    </div>
    <?php }?>