How do you make a horizontal scrolling photo gallery in Javascript?

I have already created the UI for this project. See attached screenshot. The gallery will contain 6 images at a time. I still need to insert a right/left arrow icons for scrolling. So each time an arrow is clicked, I want the gallery to scroll 6 new images. I already have javascript code that loads an entire form with images from the file system. So I'm assuming just to show 6 images at a time an array would be needed or some kind of container object. My problem is I'm just not sure how to create that scrolling effect in the way that I've described. Please help!

Thanks,

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