Realized that it was an issue on my end. I was having troubles shortly after with my browser as a whole, and cleared the cookies and everything is back to normal and works again. Thank you for your reply!
I am also wanting to achieve this, and the code that tuanphan posted works, however it displays the actual code itself at the top of the page. I am in Squarespace 7.1 as well. Does anyone know how to hide the code from displaying?