Chrome Javascript Waypoint issue

General information for the website: We sell drones online
Num. of web pages/modules: 1
Description of requirements/features: Hi,

We have an issue with the jQuery waypoint module (http://imakewebthings.com/waypoints/).
Is works perfect in browser like Firefox and Safari. In Chrome is doesnt work.

What to do to see this problem:
- Open Google Chrome
- Browse to: https://www.rchelicoptershop.nl/drones/wltoys-q303-drone/wltoys-q303
- Scroll down to the bottom till you get a fixed menu with an add to cart button and options like: "Productbeschrijving" and "Video's".
- Try to click on one of these menu options. You can click what you want, but it doenst work
- Try this in Firefox to see what is needs to do.

Important: we can't give FTP access because this is a live multi webshop. We hope you can fix it via developer toolbar.
Similar urls: https://www.rchelicoptershop.nl/drones/wltoys-q303-drone/wltoys-q303
Extra notes: