Redirecting to a parent page

Hi me again :-) Lets say that I have the next structure on my web directory /file1.php /procces/file2.php /file3.php So, when I see the file1.php on the browser I see the page in this route http://localhost/apache2/file1.php I have a button that sends information to the /process/file2.php. When the process is finished, I have to come back to the parent directory page. Im using this instruction header( refresh:'3'; url=./file3.php); But I got the error that in http://localhost/file3.php does not exists any page If I use this header( refresh:'3'; url=file3.php); I got the error that in http://localchost/procces/file3.php does not exists So, how can I redirect the file2.php to the file3.php in the parent directory? Thanks again folks!! Yamil