#define delta_width 16
#define delta_height 16
static char delta_bits[] = {
 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x00,0x1e,0x00,0x7f,0x08,0xfc,
 0x19,0xfe,0x7f,0xfe,0x7f,0xfc,0x19,0x7f,0x08,0x1e,0x00,0x06,0x00,0x00,0x00,
 0x00,0x00};