menu DOESN'T overlap slideshow

I just got this installed and LOVE it.

But...

you can see the site , HERE

currently mega menu isn't on because the drop down don't overlap the slideshow on the front page. Take a look at the current menu, you'll see it works fine. The mega menu, when on, drops down just fine but it goes BEHIND the stupid slide show. The stock joomla menu works fine.

Any idea what I can do to fix this?

the slideshow I'm using came from , HERE

I have both menus going if anyone wants to take a look at it.

Hi OblongSquare!
I reply for you in your ticket. Please view it.
Best Regards,
Huyen Tran