for (var i = x_offset; i <= x_offset+count_x; i++) {
        for (var j = 0; j <= coordinates[i].length-1; j++) {
            var tga = new TGA();
            var file = '';
            if (coordinates[i][j] < 10) {
                file = '/tga/thumbnails/00'+i+'_-00'+coordinates[i][j]+'.tga';
            } else {
                file = '/tga/thumbnails/00'+i+'_-0'+coordinates[i][j]+'.tga'
            }

            tga.open(file, function(data) {
                var left = (i-x_offset)*128;
                var top = j*128;
                var canvas = tga.getCanvas(0, top, function(data) {
                    console.log();
                });
            });
        }
    }