How to remove javascript from my website

Hello,

I found Japanese writing on my website and I was wondering if this is normal. This is the link: https://webcache.googleusercontent.com/search?q=cache:https://articulatedmedia.com&strip=0&vwsrc=1

I also have no idea how to access this file. Sorry!

Thank you for your help.

The page I need help with: [log in to see the link]