Insert a simple JQuery code in Avada

I need some help ;D

I want to insert a simple JQuery Code in my wordpress theme (avada)

I would like to insert a thing like this : http://ift.tt/24WCYdV

$(function() {
  $("#tabs").tabs({ show: { effect: "blind", direction: "right", duration:300 }});
  $( "#accordion" ).accordion();

  var btn = $('#accordion li a');
  var wrapper = $('#accordion li');

  $(btn).on('click', function() {
  $(btn).removeClass('active');
  $(btn).parent().find('.addon').removeClass('fadein');

$(this).addClass('active');
$(this).parent().find('.addon').addClass('fadein');

}); });

in a page, but it don't work.

I tried to change and add different classes to all the HTML elements, but it doesnt work.

I tried to insert my code with a plugin named CSS & Javascript Tool box, but nothing works too.

Thanks !

via Chebli Mohamed