window.addEvent('domready', function() {
accordion = new Accordion('div.toggle','div.toggler', {
    duration: 300,
    opacity: false,
    alwaysHide: true
  });
});

function display(index) {
  if (accordion) { // IS THE accordion VARIABLE ASSIGNED/DEFINED?
    accordion.display(index); // YES, IT'S DEFINED, SO CALL accordion.display()
  }
}