PIL and cgi

[Mathieu]

i'd like to use PIL for make picture on the fly, i try 


#!D:\Program Files\Python\Python.exe

from cStringIO import *
import Image

img = Image.open('tmp.jpg')

tmp = StringIO()
img.save(tmp, 'JPEG')
tmp.seek(0)
image = tmp.read()
  
print '''\
Content-type: image/jpeg
Content-length: %s

%s''' % (len(image), image)

but, the picture lokks strange, like she was shuffled, where is the
mistake?
it was done on Apache 1.3, Pil 1.0, Python 1.52 on an NT4

thanks.

M.