image transparency

[Ben Lewis]

MapServer users,
Is there a way to specify a pixel value for transparency?  I have images 
with null value borders and would like the images to appear seamless so I 
would like to specify 0 0 0 or perhaps 255 255 255 as transparent.  BTW is 
there any way to tweak contrast/brightness?
Thank you.


Ben Lewis
Advanced Technology Solutions, Inc.
Lancaster, PA
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