When I check this site in IE and FF. I found out that sifr works in ie but not in FF.
You can see the difference in the h1 tags
Can anyone tell me what I do wrong?
You're using sIFR 2.0.2 on that page. If you insist on using sIFR 2, you'll have to use 2.0.7 for it to work with Flash 10.