private function _checkProhibitedTokens($token) {
		if ($this->_isActive('checkProhibitedTokens')) {
			if (in_array($token->getName(), $this->_prohibitedTokens)) {
				$msg = $this->_getMessage("PROHIBITED_TOKEN", $token->getName());
				$this->_writeError('checkProhibitedTokens', $msg);
			}
		}
	}