https://www.theyogatutor.com/js/efx.js

1// JavaScript Document
2
3function renderHidHtml(elem,dstart,ddispr){
4	pelem = $(elem).parent('div');
5	
6		
7		if(!$(elem).hasClass('doingtran')){
8			$(elem).addClass('doingtran');
9			$(elem).delay(dstart);
10			$(elem).fadeIn("fast");
11			if(ddispr>0){
12				$(elem).delay(ddispr);
13				$(elem).fadeOut("fast");
14			}
15		}
16	
17}
18function isScrolledIntoView(elem){
19	if((($(window).scrollTop()+($(window).height())) > $(elem).offset().top)){
20		return true;
21	}
22	return false;	
23}