Gfx table with sizes for surprise item
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<- : current image

gfx16
-----
(8px  -> 50%   )
(10px -> 62.5% )
12px -> 75% <-


gfx32
-----
16px -> 50%
18px -> 56.25% <-
20px -> 62.5%


gfx40
-----
20px -> 50%
22px -> 55%  <= orig
24px -> 60%


gfx48
-----
(22px -> 45.8% )
24px -> 50%
26px -> 54% <-
28px -> 58%


gfx64
-----
(28px -> 43.75% )
30px -> 46.8%
32px -> 50% <-
34px -> 53%
36px -> 56.25%
