[rbl]

For future reference or anyone with a similar request, the instructions are:
- open browseimages.php and search for:
$show['subcats'] = iif($subcatbits = print_categories($catinfo['catid']), true);

- replace by:
// Mod to display subcategories only in the first page
// $show['subcats'] = iif($subcatbits = print_categories($catinfo['catid']), true);
if ($page == 1 OR !$page)
{
$show['subcats'] = iif($subcatbits = print_categories($catinfo['catid']), true);
}
}