https://schwarzesbayern.info/wp-content/themes/enfold/js/avia-compat.js?ver=4.7.2

1/* 
2	this prevents dom flickering for elements hidden with js, needs to be outside of dom.ready event.also adds several extra classes for better browser support 
3	this is a separate file that needs to be loaded at the top of the page. other js functions are loaded before the closing body tag to make the site render faster
4*/
5"use strict"
6
7var avia_is_mobile = false;
8if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) && 'ontouchstart' in document.documentElement)
9{
10	avia_is_mobile = true;
11	document.documentElement.className += ' avia_mobile ';
12}
13else
14{
15	document.documentElement.className += ' avia_desktop ';
16}
17document.documentElement.className += ' js_active ';
18
19(function(){
20	//set transform property
21    var prefix = ['-webkit-','-moz-', '-ms-', ""], transform = "";
22    for (var i in prefix)
23    { 
24    	// http://artsy.github.io/blog/2012/10/18/so-you-want-to-do-a-css3-3d-transform/
25    	if(prefix[i]+'transform' in document.documentElement.style) 
26    	{ document.documentElement.className += " avia_transform "; transform = prefix[i]+'transform'}
27    	if(prefix[i]+'perspective' in document.documentElement.style) document.documentElement.className += " avia_transform3d "; 
28	}
29	
30	//set parallax position to prevent jump at pageload
31	if(typeof document.getElementsByClassName == 'function' && typeof document.documentElement.getBoundingClientRect == "function" && avia_is_mobile == false)
32	{
33		if(transform  && window.innerHeight > 0)
34		{
35			setTimeout(function(){
36				var y = 0, offsets = {}, transY = 0, parallax = document.getElementsByClassName("av-parallax"),
37				winTop = window.pageYOffset || document.documentElement.scrollTop;
38				
39				for (y = 0; y < parallax.length; y++) {
40					parallax[y].style.top = "0px";
41					offsets	= parallax[y].getBoundingClientRect();
42					transY	= Math.ceil( (window.innerHeight + winTop - offsets.top) * 0.3 );
43				    parallax[y].style[transform] = "translate(0px, "+transY+"px)";
44				    parallax[y].style.top = "auto";
45				    parallax[y].className += ' enabled-parallax ';
46				}
47			}, 50);
48		}
49	}
50})();