https://www.hollisterpowersports.com/Portals/0/Templates/Promotion…/PromotionCard/js/viewportSize.js?cdv=1273

1/*! viewportSize | Author: Tyson Matanich, 2013 | License: MIT */
2(function (window) {
3
4	window.viewportSize = {};
5
6	window.viewportSize.getHeight = function () {
7		return getSize("Height");
8	};
9
10	window.viewportSize.getWidth = function () {
11		return getSize("Width");
12	};
13
14	var getSize = function (Name) {
15		var size;
16		var name = Name.toLowerCase();
17		var document = window.document;
18		var documentElement = document.documentElement;
19		if (window["inner" + Name] === undefined) {
20			// IE6 & IE7 don't have window.innerWidth or innerHeight
21			size = documentElement["client" + Name];
22		}
23		else if (window["inner" + Name] != documentElement["client" + Name]) {
24			// WebKit doesn't include scrollbars while calculating viewport size so we have to get fancy
25
26			// Insert markup to test if a media query will match document.doumentElement["client" + Name]
27			var bodyElement = document.createElement("body");
28			bodyElement.id = "vpw-test-b";
29			bodyElement.style.cssText = "overflow:scroll";
30			var divElement = document.createElement("div");
31			divElement.id = "vpw-test-d";
32			divElement.style.cssText = "position:absolute;top:-1000px";
33			// Getting specific on the CSS selector so it won't get overridden easily
34			divElement.innerHTML = "<style>@media(" + name + ":" + documentElement["client" + Name] + "px){body#vpw-test-b div#vpw-test-d{" + name + ":7px!important}}</style>";
35			bodyElement.appendChild(divElement);
36			documentElement.insertBefore(bodyElement, document.head);
37
38			if (divElement["offset" + Name] == 7) {
39				// Media query matches document.documentElement["client" + Name]
40				size = documentElement["client" + Name];
41			}
42			else {
43				// Media query didn't match, use window["inner" + Name]
44				size = window["inner" + Name];
45			}
46			// Cleanup
47			documentElement.removeChild(bodyElement);
48		}
49		else {
50			// Default to use window["inner" + Name]
51			size = window["inner" + Name];
52		}
53		return size;
54	};
55
56})(this);