Browser Security Warning

["Joe Wells" <jwells@xxxxxxxxx>]

I have written a web application (rpg/cgi) that allows our users to search
and view tiff images from our image repository.

When the user requests an image, "Content-Type: image/tiff" is placed at the
top of the return buffer and then the contents of the image are read and
written to the buffer and then to the browser.

Here is my question - this runs over a secure connection, however, when the
document is displayed in the new browser window, the browser complains that
"This page contains both secure and nonsecure items."  How do I prevent this
from happening?  I have Googled around, but have not been able to find what
I am doing wrong.

Thanks in advance for any help!

Joe