need help with fireworks2 sliced graphics

Hello all,

I'm having trouble with the graphics for a site I'm about to launch.  It
looks to me like something is happening when the sliced images are
optimized---the colors are slightly off--so that squares of mismatched color
are visible.  Does anyone know how
to fix this?  Is there a setting in Fireworks that I didn't set correctly?


A draft of the site can be seen at:
http://www.worldofscience.org/home.html

The problem is throughout the site.  So far, the site is only a few pages,
and isn't quite ready to launch yet.
I hope to have this problem resolved soon, so I can continue creating its
content.

Thank you, in advance, for your help.
--Kristin
http://www.worldofscience.org

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