creating Slide Out Panel

[Amy-Amy]

Hello All
I want to be able to create a panel that slides out across the screen when I tap on a stub. I want it to slide out and slide back with a close function. Something like this :

http://codepen.io/exitfish/pen/BydsE

Although I can insert html code into a placeholder, this code uses CSS and JS and I am sure sure how that is put in correctly, I tried a few times with no luck.

I thought that there was a feature in Xaxa web premium that does that allows for a panel to slide out and in, I think i saw it in a youtube guide in the past

Any Help appreciated