Indentions for subcategoris for template... help needed

[Php Padawan]

hello I am venturing into the world of php and have come across a template that I am looking to use.. Im just getting started but after installing it when clicking on the categories the sub-categories that are revealed are flush with the parent categories.. I would like a small indention. Now I have looked and this has been covered many times.. but I have noticed peoples codes are different. So I was hoping to show you my code for the admin/includes/boxes/ config.php page to see if someone knows how i can address this problem with this code. I cant see where really they have listed the subcategory query with the command to put in and indent command. Like I said im kinda of new at this so its probably right in front of me... any help would be much appreciated. I see that there are many talented and helpful programmers on here so any help is appreciated.

<?php
/*
 $Id: categories.php,v 1.25 2003/07/09 01:13:58 hpdl Exp $

 osCommerce, Open Source E-Commerce Solutions
 [url="http://www.oscommerce.com"]http://www.oscommerce.com[/url]

 Copyright © 2003 osCommerce

 Released under the GNU General Public License
*/

 function tep_show_category($counter) {
   global $tree, $categories_string, $cPath_array;

   for ($i=0; $i<$tree[$counter]['']; $i++) {
     $categories_string .= "";
   }

   $categories_string .= '<tr><TD valign="middle" height="20" align="left" style="padding-left:10px;"><img src="images/marker_cat.gif" width="3" height="5" alt="" style="margin-right:5px;" /><a class="categories" href="';

   if ($tree[$counter]['parent'] == 0) {
     $cPath_new = 'cPath=' . $counter;
   } else {
     $cPath_new = 'cPath=' . $tree[$counter]['path'];
   }

   $categories_string .= tep_href_link(FILENAME_DEFAULT, $cPath_new) . '">';

   if (isset($cPath_array) && in_array($counter, $cPath_array)) {
     $categories_string .= '<b>';
   }

// display category name
   $categories_string .= $tree[$counter]['name'];

   if (isset($cPath_array) && in_array($counter, $cPath_array)) {
     $categories_string .= '</b>';
   }

   if (tep_has_category_subcategories($counter)) {
     $categories_string .= '->';
   }

   $categories_string .= '</a>';


   if (SHOW_COUNTS == 'true') {
     $products_in_category = tep_count_products_in_category($counter);
     if ($products_in_category > 0) {
       $categories_string .= '<span class="categories"> (' . $products_in_category . ')';
     }
   }

   $categories_string .= '</td></tr><tr><td align="center"><img src="images/points_cat.gif" width="163" height="1"></td></tr>';

   if ($tree[$counter]['next_id'] != false) {
     tep_show_category($tree[$counter]['next_id']);
   }
 }
?>
<!-- categories //-->
         <tr>
           <td bgcolor="#FFE3A6" valign="top">
<?php
 $info_box_contents = array();
 $info_box_contents[] = array('text' => BOX_HEADING_CATEGORIES);

 new infoBoxCategoriesHeading($info_box_contents, true, true); ?>


<?php   $categories_string = '';
 $tree = array();

 $categories_query = tep_db_query("select c.categories_id, cd.categories_name, c.parent_id from " . TABLE_CATEGORIES . " c, " . TABLE_CATEGORIES_DESCRIPTION . " cd where c.parent_id = '0' and c.categories_id = cd.categories_id and cd.language_id='" . (int)$languages_id ."' order by sort_order, cd.categories_name");
 while ($categories = tep_db_fetch_array($categories_query))  {
   $tree[$categories['categories_id']] = array('name' => $categories['categories_name'],
                                               'parent' => $categories['parent_id'],
                                               'level' => 0,
                                               'path' => $categories['categories_id'],
                                               'next_id' => false);

   if (isset($parent_id)) {
     $tree[$parent_id]['next_id'] = $categories['categories_id'];
   }

   $parent_id = $categories['categories_id'];

   if (!isset($first_element)) {
     $first_element = $categories['categories_id'];
   }
 }

 //------------------------
 if (tep_not_null($cPath)) {
   $new_path = '';
   reset($cPath_array);
   while (list($key, $value) = each($cPath_array)) {
     unset($parent_id);
     unset($first_id);
     $categories_query = tep_db_query("select c.categories_id, cd.categories_name, c.parent_id from " . TABLE_CATEGORIES . " c, " . TABLE_CATEGORIES_DESCRIPTION . " cd where c.parent_id = '" . (int)$value . "' and c.categories_id = cd.categories_id and cd.language_id='" . (int)$languages_id ."' order by sort_order, cd.categories_name");
     if (tep_db_num_rows($categories_query)) {
       $new_path .= $value;
       while ($row = tep_db_fetch_array($categories_query)) {
         $tree[$row['categories_id']] = array('name' => $row['categories_name'],
                                              'parent' => $row['parent_id'],
                                              'level' => $key+1,
                                              'path' => $new_path . '_' . $row['categories_id'],
                                              'next_id' => false);

         if (isset($parent_id)) {
           $tree[$parent_id]['next_id'] = $row['categories_id'];
         }

         $parent_id = $row['categories_id'];

         if (!isset($first_id)) {
           $first_id = $row['categories_id'];
         }

         $last_id = $row['categories_id'];
       }
       $tree[$last_id]['next_id'] = $tree[$value]['next_id'];
       $tree[$value]['next_id'] = $first_id;
       $new_path .= '_';
     } else {
       break;
     }
   }
 }
 tep_show_category($first_element); 

 $info_box_contents = array();
 $info_box_contents[] = array('text' => '<table border="0" cellpadding="0" cellspacing="0" height="100%"  width="100%" style="border:1px solid #EBAB10; border-width:0px 1px;">'.$categories_string.'</table>');

 new infoBox($info_box_contents);
  new infoBoxCategoriesFooter('');
?>

           </td>
         </tr>
<!-- categories_eof //-->