Don't post the entire library, just post the code for your SWFObject implementation and anonymize the URL's, like this
// Your code here
And we can probably help you. SWFObject does work and it's code that is accessible and validates.
Before you do that, a couple questions:
- Have you eliminated EVERYTHING on the page except the placeholder div and the JS? A validation error can break it.
- In FF, are you getting any errors in the Error Console?
- Tel us a little bit about the Flash - is it "self contained" or is it something that imports external data, like a slide show or video? This can be something completely different than how you're embedding it.