Multi sets submit button not working

I am using muti sets below all my posts (example – http://electronicsb2b.com/top-electronic-companies/6085/)

When I rate any of the five option and click on submit. Submiit does not work. It means my ratings are not getting calculated.

What is the solution for that?

http://ww.wp.xz.cn/extend/plugins/gd-star-rating/