Strange behaviour .swf header IE6 and IE7

Hi all,
I just made site with joomla + MisterEstate(Joomla component).
Everything is working fine except a strange bahaviour with a flash header made with rainbowheader(plugin for dreamweaver).
It’s showing fine in every pages with firefox but it’s not shown at all on single object pages in IE6 and IE7.
Other pages are ok both with IE6 and IE7.

This is a working page showing the header:
Home page
This is an object test page not showing the header:
Single object page

Strange, isn’t it?
As I’m not an expert I don’t know if it’s a flash related problem or a dreamweaver related or if I have to edit something in MisterEstate and/or in my index.php template.

I hope someone can point me to the right direction.
Thanks in advance.