var clarendon = {
  src: 'http://www.onegoodidea.ca/ogi3/flash/clarendon.swf'
};

var clarendonbold = {
  src: 'http://www.onegoodidea.ca/ogi3/flash/clarendonbold.swf'
};

sIFR.activate(clarendon, clarendonbold);

sIFR.replace(clarendonbold, {
  selector: 'h1'
});

sIFR.replace(clarendon, {
  selector: 'h3'
});