jQuery.fn.fadeToggle = function(speed, easing, callback) {
  return this.animate({opacity: 'toggle'}, speed, easing, callback);  
};
 
$(document).ready(function() {
  $('#fade').click(function() {
	$("p.change").toggle();
    $('#nav').fadeToggle('slow');
	$('#hide').fadeToggle('slow');
	$('#float').fadeToggle('slow');
	$('article').fadeToggle('slow');
	$('aside').fadeToggle('slow');
  });
});