Troubles with alpha transparency

flash 8 newbie, working on my first projects.

I have a banner where I bring in text. I set up the motion tween, and it works when I scrub the timeline. But the transition in transparency (from 0 to 50%) doesn’t come through when published. Instead, the text is 100%.

Any ideas why this isn’t working?
here is the first version.
http://www.welcometomgh.com/index_test.php

thanks,
michael