I'm opening a .flv in shadowbox, works fine in Firefox, but opens below the overlay in IE. I looked on their site, and double checked the <doctype>. That's fine, but still have the problem.
Any other ideas?
Ended up being a Fusebox/ColdFusion issue. Some custom tags I'm using placed HTML comments at the top of every page, before the doctype declartion. I suppressed those from the output (using <cfsilent>) and all is well. The doctype needs to be strict, and has to be the first item of your page.