Flash MX2004 - SWF not positioning correctly

hello all,
my site is at waxmuseumplus dot ie
css file is on the top level called layout.css

I've put my site up and it works fine except that sometimes when you go to another page and comeback to the homepage the swf files don't position correctly. The real bizarre thing is that if you reload the page (maybe not on the first try but maybe the second try) it appears fine again.

there are 6 swf files at the bottom right corner of the blue boxes across the page. They create the page curl animation at the bottom right. 9 out of 10 times they all load in position correctly but sometimes they don't. They appear further down the page.

I think the fix is in the "a" link which i've wrapped around the div pagecurl and div textabove. I had this original set to 100% height. But i have now given it a 150px height. This doesn't fix anything though?

The problem is that it is intermittent. Of course it looks fine my FF3 and when i test on others but when the client checks she sees errors.

Please help I'm tearing my hair out and the site is already live!