Is it possible to change the links of the images in the product listing?

Standard, it referres to the product page but I would like to show the large image instead. This is already done default with the image on the product page but I would like this feature to be on the product list.

I would even prefer to remove the (links to the) product page entirely because there is no extra info necessary but I don't know if that is possible.

I hope somebody can help me out...