move login code to ./
add menu-bar and side bar to welcome_message
before using index.php
before delete  login.html php
delete many files
finish login
before register.php
before register.php
data.sql
use own index.php
add logout.php
an ugly register
before upload
upload
basic upload funtion
basic upload funtion
basic upload funtion
upload file can write to database
register can upload pic now
update login time