Clicking on questions doesn't open answers in IE7 and IE8

Thanks for this great module! It makes my faq page look much better and more convenient. It's working great in Chrome, FF and IE9, but I just found it not working properly in IE7 and IE8.

My settings were "opens/hides answer under question" and "Use accordion effect". I can't open any answers on faq page as well as category page by clicking on questions in IE7/8. It basically means that none of my answers to those questions would be seen by users. I now changed the settings to "opens/hides answer under question" and "Show "expand / collapse all" links". The answers still can't be opened by clicking on the questions but at least when clicking on "expand all" link all answers appear. I have quite many faq on the page, so it takes a while for all the answers to appear, not very ideal.

I guess the cause resides in Javascript in some IEs. From the HTML source code I see a "jquery1310027692938="21"" in the div of "faq-question faq-dt-hide-answer" (the numbers in the code vary in different questions) which I don't see in Chrome or FF. I have very little knowledge of Javascript so wonder if there would be any suggestions that could solve this problem? Thanks.