Mootools Accordion Cookie-State-Saver

window.addEvent('domready', function()
{
  //read the currentToggler from the cookie. if it doesn't exist, defaults to -1
  var currentToggler = $pick(Cookie.read('currentToggler'),-1),
  togglers = $$('.toggler'),
  elements = $$('.element'),
  myAccordion = new Fx.Accordion(togglers, elements,
  {
    display: currentToggler,
    onActive: function(toggler, element)
    {
      //whenever a toggler is activated, set the currentToggler cookie to the toggler index
      Cookie.write('currentToggler',togglers.indexOf(toggler));
      toggler.setStyles(
      {
        background: '#fb8523',
        color: '#FFF'
      });
    },
    onBackground: function(toggler, element)
    {
      toggler.setStyles(
      {
        background: '#FFF',
        color: '#000'
      });
      element.setStyles({border: '0px'});
    }
  });
});