Image variables in Product pages

Hi all,



does anyone know which are the variables for the images shown in product page :


  1. the image uploaded in Admin > Add new product > Detailed information > thumbnail



    and


  2. the images uploaded in Admin > Add new product > Images > Additional images > additional thumbnails (here one may upload more images… but I wonder… does each image use different variable?)



    MUST USE FOR :

    I must use different images in “Newest products” and “Recently seen” side boxes

    and I thought I may use the images uploaded in product’s admin page, if only each of those image use different variable…



    Anyone,

    HELP?