Bigcommerce javascript to change images based on variations

We have a [login to view URL] website and for one or more of our products we wish to allow customers to change the variations of the product. Each variation will change a layer of the image so that they build up the full picture (for eg: of a face ). There are be approx 10 difference type of variations (eg: hair, eyes, smile etc) and each will have about 5 choices (blue/green etc), meaning there will be in total 50+ variations. Each chosen variation will show as a layer in the image. Check out [login to view URL] for further details (you can view it live for free for 14 days), it needs to fit within the boundaries of the bigcommerce site. Once a the customer has chosen all the variations, they will purchase the item which ideally would be stored with the order as a pdf file, so we can then print it out. The customer can then review the original order within big commerce.