Dynamically centering a large swf in an HTML page?

Hi guys , apart from the obvious : creating a table , aligning centre commands etc…

I have a 1600 x 1200 swf, the main content sits top centre in this movie…normally flash uses the top left as proxy for alignment…

this means that when I centre the movie…the content which is ( in the centre of the swf ), sits off sceen at a smaller res…

I need to dynamically centre the swf into an HTML page, wrapping the rest of the swf " under" the browser…

So I need some code that at runtime checks its width in relation to the screensize , from within the swf and dynamically centres…with no scrollbars horizontally…only vertically …

HA ! Ive been pulling my hair out, if ANYONE CAN HELP>>>
PLEASE >>I BOW AND SCRAPE ON BENDED KNEE !!!

pix .
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