jQuery.fn.slideFadeToggle = function(speed, easing, callback) {
  return this 
};
  
  $(document).ready(function(){ 
							   
        $("ol#quiz li em").click( function(){ 				   
				$(this).parent().find('span.answer').animate({opacity: 'toggle', height: 'toggle'}, "slow", "swing");
			});
    });