function rename2($name){
	$n = 0;
	$newname = $name;
	while(file_exists($newname)){
		preg_match("/(\.\w+$)/", $name, $ext);
		$newname = ereg_replace("$ext[1]$", "($n)$ext[1]", $name);
		$n++;
	}	
	return $newname;	
}