global $pref;

$parm     = trim($parm);
$external = ($pref['links_new_window'] || strpos($parm, 'external') === 0) ? ' rel="external"' : '';

if ($parm && $parm != 'external' && strpos($parm, ' ') === FALSE)
{
	$parm = preg_replace('#^external.#is', '', $parm);
	if (strtolower(substr($parm, 0, 11)) == 'javascript:')
		return '';
	return '<a href="'.$tp->toAttribute($parm).'" class="bbcode"'.$external.'>'.$code_text.'</a>';
}
else
{
	if (strtolower(substr($code_text, 0, 11)) == 'javascript:')
		return '';
	return '<a href="'.$tp->toAttribute($code_text).'" class="bbcode"'.$external.'>'.$code_text.'</a>';
}