Show ONLY image-file thumbnails, without folder icons

[TT]

How can this be done? I would like to view thumbnails for, say, JPG, GIF, PNG, etc., but I don't want to see any folders .. just the thumbs for the files I select. I tried setting a folder filter, but it still displays the folders. I tried using 'View, Only Selected Files' .. same results. Hmmm...

[ralfso]

I think there's no option to switch it off.