OniX777 on "[Plugin: WP e-Commerce] How to show only sub categories on the parent category page?"

I need to display on the main page of the store only parent category of goods, and this I did, I comment output code sub-categories in the template.

Now the problem is that - when you switch to any category of goods, I need to show only its sub categories, parent no. And so with all levels of sub categories, how to realize it?
I understand this code

<?php wpsc_start_category_query(array('category_group'=> 1, 'show_thumbnails'=> 1)); ?>
<a href="<?php wpsc_print_category_url();?>"  title="<?php wpsc_print_category_name();?>">
<?php wpsc_print_category_image(); ?>
</a>
wpsc_print_category_name();?>
<?php wpsc_end_category_query(); ?>

show categories. How to find a sub category of the current category to which the user is located and bring them out.
What functions to use it, and how a paste it to this code?

Sorry for my English, thanks.

http://wordpress.org/extend/plugins/wp-e-commerce/