At about line 92 of the includes/templates/your_template/sideboxes/tpl_document_categories.php
there's this:
Code:
//picking the appropriate pointer image:
switch ($categoryType) {
case "down":
$pointer = zen_image(DIR_WS_TEMPLATE_IMAGES . 'bc_doc_pointer_down.gif');
break;
case "right":
$pointer = zen_image(DIR_WS_TEMPLATE_IMAGES . 'bc_doc_pointer_right.gif');
break;
default:
$pointer = zen_image(DIR_WS_TEMPLATE_IMAGES . 'bc_doc_no_sub.gif');
}
$pointer .= $spacer;
The mod author recommends in the readme.txt file that you replace those
with the 1x1_transparent.gif if you don't want an image.