help with database query selecting manufacturers

hi,
building my megamenu and if you check here

http://bicycles.stuff-4-sale.org

if you hover over bikes you will see what im talking about. i want 3 columns of categories and one with the manufacturers, but i only want manufacturers that are connected to the categoies shown.

<?php
		
  $show_manufacturers= true;

// for large lists of manufacturers uncomment this section
/*
  if (($_GET['main_page']==FILENAME_DEFAULT and ($_GET['cPath'] == '' or $_GET['cPath'] == 0)) or  ($request_type == 'SSL')) {
    $show_manufacturers= false;
  } else {
    $show_manufacturers= true;
  }
*/

// Set to true to display manufacturers images in place of names
define('DISPLAY_MANUFACTURERS_IMAGES',true);

if ($show_manufacturers) {

// only check products if requested - this may slow down the processing of the manufacturers sidebox
  if (PRODUCTS_MANUFACTURERS_STATUS == '1') {
    $manufacturer_sidebox_query = "select distinct m.manufacturers_id, m.manufacturers_name, m.manufacturers_image
                            from " . TABLE_MANUFACTURERS . " m
                            left join " . TABLE_PRODUCTS . " p on m.manufacturers_id = p.manufacturers_id
							left join " . TABLE_PRODUCTS_TO_CATEGORIES . " c on p.products_id = c.products_id
                            where m.manufacturers_id = p.manufacturers_id and p.products_status= 1 and c.categories_id = 963
                            order by manufacturers_name";
  } else {
    $manufacturer_sidebox_query = "select m.manufacturers_id, m.manufacturers_name, m.manufacturers_image
                            from " . TABLE_MANUFACTURERS . " m
                            order by manufacturers_name";
  }

  $manufacturer_sidebox = $db->Execute($manufacturer_sidebox_query);

  if ($manufacturer_sidebox->RecordCount()>0) {
    $number_of_rows = $manufacturer_sidebox->RecordCount()+1;

// Display a list
    $manufacturer_sidebox_array = array();
//		kuroi: commented out to avoid starting list with text scrolling list entries such as "reset" and "please select"
//    if (!isset($_GET['manufacturers_id']) || $_GET['manufacturers_id'] == '' ) {
//      $manufacturer_sidebox_array[] = array('id' => '', 'text' => PULL_DOWN_ALL);
//    } else {
//      $manufacturer_sidebox_array[] = array('id' => '', 'text' => PULL_DOWN_MANUFACTURERS);
//    }

    while (!$manufacturer_sidebox->EOF) {
      $manufacturer_sidebox_name = ((strlen($manufacturer_sidebox->fields['manufacturers_name']) > MAX_DISPLAY_MANUFACTURER_NAME_LEN) ? substr($manufacturer_sidebox->fields['manufacturers_name'], 0, MAX_DISPLAY_MANUFACTURER_NAME_LEN) . '..' : $manufacturer_sidebox->fields['manufacturers_name']);
	  $manufacturer_sidebox_image = $manufacturer_sidebox->fields['manufacturers_image'];
      $manufacturer_sidebox_array[] =
		array('id' => $manufacturer_sidebox->fields['manufacturers_id'],
			  'text' => DISPLAY_MANUFACTURERS_IMAGES ?
				zen_image(DIR_WS_IMAGES . $manufacturer_sidebox_image, $manufacturer_sidebox_name) :
				$manufacturer_sidebox_name);
      $manufacturer_sidebox->MoveNext();
    }
      
  }
} // $show_manufacturers
				for ($i=0;$i<sizeof($manufacturer_sidebox_array);$i++) {
      $content = '';
	  $content .= '<li><a class="hide" href="' . zen_href_link(FILENAME_DEFAULT, 'manufacturers_id=' . $manufacturer_sidebox_array[$i]['id']) . '">';
      $content .= $manufacturer_sidebox_array[$i]['text'];
      $content .= '</a></li>' . "\n";
      echo $content;
	}
?>        

so i am using ```php
and c.categories_id = 963

hope this makes sense

thanks
bn

now sorted using

c.categories_id in (963,964,478)

unless there is a better way

bn