Scrolling Displayed Video Thumbnails (Webly Theme)

Hello there, I am currently customizing the Webly Theme from ElegantThemes This is my website at the bottom of the page, you’ll see a 5 video thumbnails from different posts and 1 category. Even if I have 13 posts with that category, it only display 5, and that’s great.. But I want to be able to reveal the other videos by scrolling it sidewards, the problem is, it’s not part of the theme.. I don’t want to use another plugin coz I like how it looks, I just want me to implement it. But I don’t know.. Im not good in Jquery nor Javascript. Can you help me guys.. here is the code