All images are in folder: templates\hot_flashes\images\menu\
bg1.jpg
bg2.jpg
...
are main images and each corespondents to one slice of flashes menu. You must have one for menu root item (you can add more bg6,bg7...).
the images :
sub1.png
sub2.png
...
are for moving transparent background on sub menus. Also you must have one for each menu root item and you can add more.