replaceFonts();

function replaceFonts()
{  
   Cufon.replace('h1', { fontFamily: 'Gotham Bold' });  
   Cufon.replace('h2', { fontFamily: 'Gotham Book' });
   Cufon.replace('h3', { fontFamily: 'Gotham Book' });
   Cufon.replace('p', { fontFamily: 'Gotham Book' });
}