What control would I use for an 'Infinite' data scroller?

Where you have a horizontal div that is loaded initially with 4 divs, 2 of which are viewable in Portrait mode and more in landscape mode, but when you pull from the right, flicking to the left to get more content an ajax call get more.

This example is common on Amazon product pages of related products, but there you have to tap on the right  cheveron/arrow to fetch more, where as a smoother approach is to load more into the non-visible part.

I have only seen examples so far of infinite scrolling from the bottom in jquery.

I imagine that you would have got this solved already, so can you give me an example of I guess your data source component feeding a div with extra divs from the right. There must be a suitable trigger point so the spinner is not going forever due to a slow load. So I guess when a 

I am trying to work out what divs need to be in the page preloaded, and what can be fetched from the server.