Would be a nice feature if Irfanview could select a random picture from a selected folder(s) and subdirectories and set it as wallpaper. Option should be present to cycle to next random picture after set amount of time. A hotkey would allow manual cycling. Pictures could be added to the selected directory/subdirectory and be considered for wallpaper without user intervention. This of course would require Irfanview to run in the background.
