infinite scrolling for a zencart ecommerce site

we have a zencart website 1.3.9 we need to implement infinite scrolling like twitter in our category listings we have 2 columns thumbnails and want a first page of 12 and a LOAD MORE button that triggers the ajax that reads the whole catalog no more than 6 pages nowadays for bigger categories so, no so mutch products to show ;) we want to keep the pagination on top of category listing 1, 2, 3 next >> we strongly need this functionality to work on iphone and tablets we have some resources to use to achieve this [login to view URL] [login to view URL] [login to view URL] Our site is strongly related to esthetics so no crappy buttons, will be allowed Additionally, just to get rid of junk bidders I will only response to developer that mention "I'M FAMILIAR WITH ZENCART" THANKS TO EVERYONE ;)