Thai Tax online

Deadline of personal income tax filing in Thailand is the end of March.  Recently, I just submitted the tax form online at the Revenue Department 's website:-
http://www.rd.go.th/

At first I was a bit worried but Mac 's Safari browser could be used without any problem. Looks like their server uses JSP.

I heard from my friend that an excessive tax money withheld would be refuned by a check mailed within 2 weeks after the filing. Let's see how it will turn out for me.

(Note added a week later: I received a refund check in the mail within 7 days after my online filing. Pretty efficient.)