window.addEvent('domready', function(){
  
  var list = $$('.menu-group');
  
  list.each(function(element){
  
    var header = element.getElement('.menu-header');
    var body = element.getElement('.menu-body');

    if (body) {
      rolledDown = body.getProperty('_rolledDown');
      if (rolledDown == '0' || !rolledDown) {
        header.style.fontWeight = 'normal';
      }
      else {
        header.style.fontWeight = 'bold';
      }
    }
    
  });

});