WP e-Commerce Sub-Category Display

< ?php
global $wp_query;
?>
<div id="grid_view_products_page_container">
< ?php echo do_shortcode('[raw]'); ?> // I'll explain this in another post. This is DEFINITELY the best way I've found to do this!!
< ?php wpsc_output_breadcrumbs(); ?>
	
	< ?php do_action('wpsc_top_of_products_page'); // Plugin hook for adding things to the top of the products page, like the live search ?>
	<div class="product_grid_display group">
	< ?php if(wpsc_display_categories()): ?>
	  < ?php if(get_option('wpsc_category_grid_view') == 1) :?>
			<div class="wpsc_categories wpsc_category_grid group">
            	< ?php $category_id = wpsc_category_id();
    			$getsubs = "SELECT term_id FROM wp_term_taxonomy WHERE taxonomy = 'wpsc_product_category' AND parent = '".$category_id."'";
			$subcats = mysql_query($getsubs); //this gets the ids of the subcategories
			$num_subcats = mysql_num_rows($subcats); //this is a count of how many subcategories the current category has
				
			while ($row = mysql_fetch_row($subcats)) {
				foreach ($row as $subcat)
				$catname = wpsc_category_name($subcat); // Gets the category name for use below
				$catimage = wpsc_category_image($subcat); // Gets the URL of the category image
				$catlink = get_term_link((int)$subcat, 'wpsc_product_category'); // Gets the link URL to the category page
					
				if ($category_id >= 0 || $category_id != '') { ?>
					<a href="<?php echo $catlink; ?>" class="wpsc_category_grid_item" title="< ?php echo $catname; ?>">
						< ?php
						// Here I did something a little different. I wanted to be able to display the category
						// title whether there is a category image or not. I made the category image the background
						// of a div and superimposed the title over it. No category image means the url for the
						// background property is empty. It's janky, but it won't break anything.
						?>
                        			<div class="cat_image" style="background:url('<?php echo $catimage; ?>') top center no-repeat; background-size: < ?php echo get_option('category_image_width'); ?>px < ?php echo get_option('category_image_height'); ?>px;width:< ?php echo get_option('category_image_width'); ?>px;height:< ?php echo get_option('category_image_height'); ?>px">
                            				< ?php if ($category_id != 0 || $category_id != '') { ?>
                        				<h4 style="z-index:200;color:#C00"><span>< ?php echo $catname; ?></span></h4>
                            				< ?php } ?>
                            			</div>
					</a>
                        	< ?php
				} 
			} ?>
            		</div>
		</div><!--close wpsc_categories BC-->
</div>