';
    $source = strip_tags($source, $allowedTags);

    return $source;
  }


 /**
  * Replace international chars
  *
  * @param string
  * @return string
  */
  function oos_replace_chars ($sStr) {
    return oos_make_filename($sStr);
  }


 /**
  * Checks to see if the currency code exists as a currency
  */
  function oos_currency_exits($code) {

    // Get database information
    $dbconn =& oosDBGetConn();
    $oostable =& oosDBGetTables();

    $currenciestable = $oostable['currencies'];
    $query = "SELECT currencies_id
              FROM $currenciestable
              WHERE code = '" . oos_db_input($code) . "'";
    $result =& $dbconn->Execute($query);

    if ($result->RecordCount() > 0) {
      return $code;
    } else {
      return false;
    }
  }


 /**
  * Checks to see if the tempalte exists 
  */
  function oos_template_exits($sStr) {

    $sDir = OOS_TEMP_PATH;
    if (substr($sDir, -1) != "/") {
      $sDir = $dir."/";
    }

    $sDir .= 'shop/';

    if (file_exists($sDir . 'templates/' . oos_var_prep_for_os($sStr) . '/theme.html')) {
      return true;
    } else {
      return false;
    }
  }


 /**
  * Return secure string
  *
  * @param $sStr
  * @return string
  */
  function oos_string_to_int($sStr) {
    return intval($sStr);
  }


 /**
  * Return $aFilename
  */
  function oos_get_filename() {
    GLOBAL $aFilename;

    return $aFilename;
  }


 /**
  * Return $aModules
  */
  function oos_get_modules() {
    GLOBAL $aModules;

    return $aModules;
  }



 /**
  * Parse and secure the cPath parameter values
  *
  * @param $cPath
  * @return array
  */
  function oos_parse_category_path($cPath) {
    // make sure the category IDs are integers
    $aCategoryPath = array_map('oos_string_to_int', explode('_', $cPath));

    // make sure no duplicate category IDs exist which could lock the server in a loop
    $aTmp = array();
    for ($i=0, $n=count($aCategoryPath); $i<$n; $i++) {
      if (!in_array($aCategoryPath[$i], $aTmp)) {
        $aTmp[] = $aCategoryPath[$i];
      }
    }

    return $aTmp;
  }



 /**
  * Return File Extension
  *
  * @param $filename
  * @return string
  */
  function oos_get_extension($filename) {

    $filename  = strtolower($filename);
    $extension = split("[/\\.]", $filename);
    $n = count($extension)-1;
    $extension = $extension[$n];

    return $extension;
  }


 /**
  * Strip non-alpha & non-numeric except ._-:
  *
  * @param $sStr
  * @return string
  */
  function oos_strip_all ($sStr) {
    $sStr =& trim($sStr);
    $sStr =& strtolower($sStr);

    return ereg_replace("[^[:alnum:]._-]", "", $sStr);
  }


  /**
   * Mail function (uses phpMailer)
   */
  function oos_mail($to_name, $to_email_address, $email_subject, $email_text, $from_email_name, $from_email_address) {

    global $oEvent;

    if (!$oEvent->installed_plugin('mail')) return false;

    if (preg_match('~[\r\n]~', $to_name)) return false;
    if (preg_match('~[\r\n]~', $to_email_address)) return false;
    if (preg_match('~[\r\n]~', $email_subject)) return false;
    if (preg_match('~[\r\n]~', $from_email_name)) return false;
    if (preg_match('~[\r\n]~', $from_email_address)) return false;

    $sLang = (isset($_SESSION['iso_639_1']) ? $_SESSION['iso_639_1'] : 'en');

    // Instantiate a new mail object
    $mail = new PHPMailer;

    $mail->PluginDir = OOS_ABSOLUTE_PATH . 'includes/classes/thirdparty/phpmailer/';
    $mail->SetLanguage( $sLang, OOS_ABSOLUTE_PATH . 'includes/classes/thirdparty/phpmailer/language/' );

    $mail->CharSet = CHARSET;
    $mail->IsMail();

    $mail->From = $from_email_address ? $from_email_address : STORE_OWNER_EMAIL_ADDRESS;
    $mail->FromName = $from_email_name ? $from_email_name : STORE_OWNER;
    $mail->Mailer = EMAIL_TRANSPORT;

    // Add smtp values if needed
    if ( EMAIL_TRANSPORT == 'smtp' ) {
      $mail->IsSMTP(); // set mailer to use SMTP
      $mail->SMTPAuth = OOS_SMTPAUTH; // turn on SMTP authentication
      $mail->Username = OOS_SMTPUSER; // SMTP username
      $mail->Password = OOS_SMTPPASS; // SMTP password
      $mail->Host     = OOS_SMTPHOST; // specify main and backup server
    } else
      // Set sendmail path
      if ( EMAIL_TRANSPORT == 'sendmail' ) {
        if (!oos_empty(OOS_SENDMAIL)) {
          $mail->Sendmail = OOS_SENDMAIL;
          $mail->IsSendmail();
        }
    }


    $mail->AddAddress($to_email_address, $to_name);
    $mail->Subject = $email_subject;


    // Build the text version
    $text = strip_tags($email_text);
    if (EMAIL_USE_HTML == 'true') {
      $mail->IsHTML(true);
      $mail->Body = $email_text;
      $mail->AltBody = $text;
    } else {
      $mail->Body = $text;
    }

    // Send message
    $mail->Send();
  }


?>