Twenty Twelve Gallery Image titles

I’m building a site for someone and I’ve come to a small problem. When I use the gallery function to layout images the image title comes up when it pops up. Is there a way to disable this?

I’m running a child theme of twenty twelve. I have the Shadowbox JS plugin installed, but I think this is still a WordPress Gallery issue, no?

Here’s a link to a page where it’s happening.

https://www.machetemachete.com/jennifermccartney/portfolio/beidaihe-villas-china/

Any/all help would be GREATLY appreciated.