Thank you for your help again, Jacob.
My Chrome version is 28.0.1500.95 m, which I will try to update and see.
Unfortunately the incognito window still have the same issue.
With that said, I have tried on a friend's computer, and it works.
I think I will give my computer a scan and restart it. Since both firefox and chrome have the issue, it must be my computer's problem.
Thank you for your help, again. I will let you know if the problem is resolved after restart. But since I could be working on my friend's computer, I am marking best answer now!