I'm using the cross sell mod which allows the display of admin defined links to related products in Zen Cart. The only problem with this is that the shopper has to click on the image to go to the linked product page and is then taken away from the original page.

Does anyone know of a mod, or does anyone have the knowledge to develop / update this mod, so that linked products can be dispalyed as thumbnails with checkboxes, so that the shopper can simply add one or more 'cross selling' items to the shopping cart without leaving the original product page?

Patrick.