How to disable Categories menu in main page?

[Geremi]

Hi there. I'd like to know how to disable Categories menu in main page? Lets say there are some products on the main page, and when I click on one of them and open the description page, on the left side of the screen Categories menu comes up. But if I'm in main page (index.php), there is no Categories menu on the left. I'm pretty useless in PHP, but I guess there must be added some exceptions in categories.php or column_left.php. Thanks for help ;)

 

  
*/ this is column_left.php */
if ((USE_CACHE == 'true') && empty($SID)) {
   echo tep_cache_categories_box();
 } else {
   include(DIR_WS_BOXES . 'categories.php');
}

[germ]

if ( isset($cPath) && ($cPath!='') ) {
 if ((USE_CACHE == 'true') && empty($SID)) {
   echo tep_cache_categories_box();
 } else {
   include(DIR_WS_BOXES . 'categories.php');
 }
}

[Geremi]

Thank you very much, germ! It works just fine! Thanks one more time ;)