Trying to use sIFR technique but having trouble

Hi all,

Im trying to use sIFR but am getting a headache trying to make it work, I have created this page

were h1.heading is currently replaced by rockwell font but the problem is the other tags on the page have become invisible?

Can anyone offer me some suggestions on how to the sIFR to work properly? Iv looked at loads of tutorials but just cant seem to get it to work

Thanks in advance