A minor problem on the site comment system

The site has some problems on the comment system, I'm now changing back to use the original blogger comment system but you guys can only post comments on the mainpage but not work on the individual post, I don't know why the "post comment" button is gone when I click onto each individual post, normally is related to the javascript.
anyway, I give up to solve it and just wanna give u guys a notice.

Gladdis So Hoi Man