in the PAGE_CONTAINER i deleted the sidebar etc what you mentioned for test... i placed the swf in the body! the content background i set to black...
HTML:
<object type="application/x-shockwave-flash" data="http://circleix.com/CircleIX-Forum-Header-Navigation.swf" width="1440" height="800">
<param name="movie" value="http://circleix.com/CircleIX-Forum-Header-Navigation.swf" />
</object>
It's not 100% good what i have because the flash will show above some content whit popups etc and on every page click the flash start again and again... once before i worked for a clients website and build a flash banner what had the same problem so it is something small...