images go here, either png, jpg or bmp in that order.

file name example: 

for 'up' images, there are two sets: one for green and another for red. 

imageupgreen1.<ext> to imageupgreen25.<ext>

and 

imageupred1.<ext> to imageupred25.<ext>

while for 'down' images, there are also two sets.

imagedowngreen1.<ext> to imagedowngreen25.<ext>

and 

imagedownred1.<ext> to imagedownred25.<ext>

