https://wildlifepreservation.ca/wp-content/themes/enfold/js/avia-compat.js?ver=8.1

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}
17
18document.documentElement.className += ' js_active ';
19
20(function()
21{
22	//set transform property
23	var prefix = [ '-webkit-', '-moz-', '-ms-', '' ],
24		transform = '',
25		transform2d = false,
26		transform3d = false;
27
28	for( var i in prefix )
29	{
30		// http://artsy.github.io/blog/2012/10/18/so-you-want-to-do-a-css3-3d-transform/
31		if( prefix[i] + 'transform' in document.documentElement.style )
32		{
33			transform2d = true;
34			transform = prefix[i] + 'transform';
35		}
36
37		if( prefix[i] + 'perspective' in document.documentElement.style )
38		{
39			transform3d = true;
40		}
41	}
42
43	if( transform2d )
44	{
45		document.documentElement.className += ' avia_transform ';
46	}
47
48	if( transform3d )
49	{
50		document.documentElement.className += ' avia_transform3d ';
51	}
52
53	//set parallax position to prevent jump at pageload
54	if( typeof document.getElementsByClassName == 'function' && typeof document.documentElement.getBoundingClientRect == "function" && avia_is_mobile == false )
55	{
56		if( transform && window.innerHeight > 0 )
57		{
58			setTimeout( function()
59			{
60				var y = 0,
61					offsets = {},
62					transY = 0,
63					parallax = document.getElementsByClassName( "av-parallax" ),
64					winTop = window.pageYOffset || document.documentElement.scrollTop;
65
66				for( y = 0; y < parallax.length; y++ )
67				{
68					parallax[y].style.top = "0px";
69					offsets	= parallax[y].getBoundingClientRect();
70					transY	= Math.ceil( (window.innerHeight + winTop - offsets.top) * 0.3 );
71					parallax[y].style[transform] = "translate(0px, " + transY + "px)";
72					parallax[y].style.top = "auto";
73					parallax[y].className += ' enabled-parallax ';
74				}
75			}, 50);
76		}
77	}
78})();