function trackbackCount($filetrack)
        {
          $numero = 0;
	  if (file_exists("./cgi-bin/tb_rss/".$filetrack.".xml"))
          {
	    $fichero = "./cgi-bin/tb_rss/".$filetrack.".xml";
            $fxml = fopen( $fichero,"r");
            while (!feof($fxml))
    		{
    			$xmlreg = fgets($fxml, 4096);
                        $item = substr($xmlreg,0,6);
                        if ($item == "<item>")
                        {
                           $numero = $numero + 1;
                        }
    		}
       	    fclose($fxml);    	    
	  }
	  else {$numero = "0";}
	  return $numero;
	}