I just search on google and find out a gallery using Ajax Technology at
http://gettingzone.com
It runs so fast when login, logout, submit, upload image, process ... amazingly. It's cool. How can we have a such application? I don not know how to buy it, which host is suitable
http://www.google.com.vn/search?q=vbulletin+forum+javascript+ajax&hl=vi&lr= &start=30&sa=N