I want to make a JavaScript remake of Phoenix for the TI-83, but can't figure out how to make the images. What does this mean, and how do I convert it to a usable format (probably gif)

Code:
img_enemy_4:
        .db     7,9
        .db     %10000010
        .db     %11000110
        .db     %11111110
        .db     %10000010
        .db     %10000010
        .db     %10000010
        .db     %11111110
        .db     %01111100
        .db     %00111000
Thanks
MadCow