function ga_clean($gaf_string,$gaf_string_length)
  {
  /*
  $gaf_string = str_replace(">","",$gaf_string);
  $gaf_string = str_replace("<","",$gaf_string); 
  $gaf_string = str_replace("'","",$gaf_string);
  $gaf_string = str_replace("`","",$gaf_string);  
  $gaf_string = str_replace('"',"",$gaf_string);
  */
  
  $gaf_string = htmlspecialchars($gaf_string,ENT_QUOTES);
  if (!get_magic_quotes_gpc())
    {
    $gaf_string = addslashes($gaf_string);
    }
  $gaf_string = mysql_real_escape_string($gaf_string);
  
  if (isset($gaf_string_length))
    {
    if (strlen($gaf_string)>$gaf_string_length)
      {
      $gaf_string = substr($gaf_string,0,$gaf_string_length); 
      }
    }
  
  return $gaf_string;
  
  }