sIFR.activate(yourtypeface);
 
sIFR.replace(yourtypeface, {
      selector: 'h1',
      css: [
      '.sIFR-root { font-size:27px; font-weight:bold; color:#ffffff; margin: 0; padding: 0; leading: 7; }'
      ],
      wmode: 'transparent' 
});
sIFR.replace(yourtypeface, {
      selector: 'h2',
      css: [
      '.sIFR-root { font-size:17px; letter-spacing:0.5; font-weight:normal; color:#ffffff; margin: 0; padding: 0; leading: 7; }'
      ],
      wmode: 'transparent' 
});
/* 
Leading används istället för line-height 
Dokumentation: http://wiki.novemberborn.net/sifr3
*/