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Current File : /var/www/www-root/data/webdav/www.catalog.monolith-realty.ru/bitrix/js/landing/polyfill.js

/*! loadCSS. [c]2017 Filament Group, Inc. MIT License */
(function(w){
	"use strict";

	if (!w.loadCSS)
	{
		w.loadCSS = (function() {});
	}

	var rp = loadCSS.relpreload = {};

	rp.support = (function() {
		var ret;
		try
		{
			ret = w.document.createElement("link").relList.supports("preload");
		}
		catch (e)
		{
			ret = false;
		}
		return function()
		{
			return ret;
		};
	})();


	rp.bindMediaToggle = function(link)
	{
		var finalMedia = link.media || "all";

		function enableStylesheet()
		{
			link.media = finalMedia;
		}

		if (link.addEventListener)
		{
			link.addEventListener("load", enableStylesheet);
		}
		else if (link.attachEvent)
		{
			link.attachEvent("onload", enableStylesheet);
		}

		setTimeout(function() {
			link.rel = "stylesheet";
			link.media = "only x";
		});

		setTimeout(enableStylesheet, 3000);
	};

	rp.poly = function()
	{
		if (rp.support())
		{
			return;
		}

		var links = w.document.getElementsByTagName("link");

		for (var i = 0; i < links.length; i++)
		{
			var link = links[ i ];
			if (link.rel === "preload" && link.getAttribute("as") === "style" && !link.getAttribute("data-loadcss"))
			{
				link.setAttribute("data-loadcss", true);
				rp.bindMediaToggle(link);
			}
		}
	};

	if (!rp.support())
	{
		rp.poly();

		var run = w.setInterval(rp.poly, 500);

		if (w.addEventListener)
		{
			w.addEventListener("load", function() {
				rp.poly();
				w.clearInterval(run);
			});
		}
		else if (w.attachEvent)
		{
			w.attachEvent("onload", function() {
				rp.poly();
				w.clearInterval(run);
			});
		}
	}

	w.loadCSS = loadCSS;
})(window);