кнопка купить joomshopping

У меня возник вопрос что и на что нужно изменить в этих файлах чтобы переходило по другой ссылке при нажатии на кнопку скачать?
category_default.php

Код (CODE):

1. <?php defined('_JEXEC') or die(); ?>
2. <div class="jshop">
3. <h1><?php print $this->category->name?></h1>
4. <?php print $this->category->description?>
5.  
6. <div class="jshop_list_category">
7. <?php if (count($this->categories)){ ?>
8. <table class = "jshop list_category">
9.     <?php foreach($this->categories as $k=>$category){?>
10.         <?php if ($k%$this->count_category_to_row==0) print "<tr>"; ?>
11.         <td class="jshop_categ" width="<?php print (100/$this->count_category_to_row)?>%">
12.           <table class = "category">
13.             <tr>
14.             <td class="image">
15.                 <a href = "<?php print $category->category_link;?>"><img class="jshop_img" src="<?php print $this->image_category_path;?>/<?php if ($category->category_image) print $category->category_image; else print $this->noimage;?>" alt="<?php print htmlspecialchars($category->name)?>" title="<?php print htmlspecialchars($category->name)?>" /></a>
16.             </td>
17.             <td>
18.                <a class = "product_link" href = "<?php print $category->category_link?>"><?php print $category->name?></a>
19.                <p class = "category_short_description"><?php print $category->short_description?></p>
20.             </td>
21.             </tr>
22.            </table>
23.         </td>    
24.         <?php if ($k%$this->count_category_to_row==$this->count_category_to_row-1) print '</tr>'; ?>
25.     <?php } ?>
26.         <?php if ($k%$this->count_category_to_row!=$this->count_category_to_row-1) print '</tr>'; ?>
27. </table>
28. <?php }?>
29. </div>
30. <?php include(dirname(__FILE__)."/products.php");?>
31. </div>

и
product_default.php

Код (CODE):

1. <td class="prod_qty_input">
2.                 <input type="text" name="quantity" id="quantity" onkeyup="reloadPrices();" class="inputbox" value="<?php print $this->default_count_product?>" /><?php print $this->_tmp_qty_unit;?>
3.             </td>        
4.             <td class="buttons">            
5.                 <input type="submit" class="button" value="<?php print _JSHOP_ADD_TO_CART?>" onclick="jQuery('#to').val('cart');" />
6.                 <?php if ($this->enable_wishlist){?>
7.                     <input type="submit" class="button" value="<?php print _JSHOP_ADD_TO_WISHLIST?>" onclick="jQuery('#to').val('wishlist');" />
8.                 <?php }?>
9.                 <?php print $this->_tmp_product_html_buttons;?>
10.             </td>
11.             <td id="jshop_image_loading" style="display:none"></td>
12.         </tr>
13.         </table>
14.     <?php }?>
15.     <?php print $this->_tmp_product_html_after_buttons;?>
16.    
17. <input type="hidden" name="to" id='to' value="cart" />
18. <input type="hidden" name="product_id" id="product_id" value="<?php print $this->product->product_id?>" />
19. <input type="hidden" name="category_id" id="category_id" value="<?php print $this->category_id?>" />
20. </form>
21.  
22. <?php print $this->_tmp_product_html_before_demofiles; ?>
23. <div id="list_product_demofiles"><?php include(dirname(__FILE__)."/demofiles.php");?></div>
24. <?php
25. if ($this->config->product_show_button_back){?>
26. <div class="button_back">
27. <input type="button" class="button" value="<?php print _JSHOP_BACK;?>" onclick="<?php print $this->product->button_back_js_click;?>" />
28. </div>
29. <?php }?>
30. <?php
31.     print $this->_tmp_product_html_before_related;
32.     include(dirname(__FILE__)."/related.php");
33.     print $this->_tmp_product_html_before_review;
34.     include(dirname(__FILE__)."/review.php");
35. ?>
36. <?php print $this->_tmp_product_html_end;?>
37. </div>

помогите если не трудно!