Pin It button interfering with drop down menu

On this page when you hover over shop on the main menu and scroll down the drop down menu once you reach the image it makes the drop down menu disappear. It happens around the drop down menu item home goods. I have tried it on Firefox and Google Chrome with the same results. Thanks so much for any help 🙂
http://client2.designcreatelaunch.net/?page_id=30

http://wordpress.org/plugins/jquery-pin-it-button-for-images/