Found this instead, perhaps because it is a template... Oh boy !
$p_pic_sub = '<a href="' . tep_href_link(FILENAME_DEFAULT, $cPath_new) . '">' . tep_image(DIR_WS_IMAGES . $categories['categories_image'], $categories['categories_name'], SUBCATEGORY_IMAGE_WIDTH, SUBCATEGORY_IMAGE_HEIGHT) . '</a>';
$p_name_sub = '<a href="' . tep_href_link(FILENAME_DEFAULT, $cPath_new) . '">' . $categories['categories_name'] . '</a>';