"use strict";
var windowHeight = window.innerHeight, windowHeightExtra = 0,
    safari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent), mobile = /Mobi/.test(navigator.userAgent);
safari && !mobile && (windowHeightExtra = window.outerHeight - window.innerHeight), mobile && (windowHeight = window.screen.availHeight, windowHeightExtra = (window.screen.availHeight - window.innerHeight) / 2);
var positionParallax = function (e, t, a, i) {
    var n = e.top / t - windowHeightExtra;
    a[i].style.top = n + "px"
}, animateParallax = function (e, t) {
    for (var a = 0; e.length > a; a++) {
        var i = e[a].parentElement.parentElement.getBoundingClientRect();
        0 <= i.top + i.height && i.top <= windowHeight && positionParallax(i, t, e, a)
    }
}, calculateHeight = function (e, t) {
    for (var a = 0; e.length > a; a++) {
        var i = e[a].parentElement.parentElement.getBoundingClientRect(),
            n = e[a].parentElement.parentElement.offsetTop, o = (windowHeight - i.height) / 2,
            r = windowHeight > i.height + n ? i.height + n - n / t : i.height + 2 * (o - o / t);
        e[a].style.height = r + 2 * windowHeightExtra + "px", positionParallax(i, t, e, a)
    }
}, universalParallax = function () {
    this.init = function (e) {
        void 0 === e && (e = {}), e = {
            speed: void 0 !== e.speed ? e.speed : 1.5,
            className: void 0 !== e.className ? e.className : "parallax"
        };
        for (var t = document.getElementsByClassName(e.className), a = 0; t.length > a; a++) {
            var i = document.createElement("div");
            t[a].parentNode.insertBefore(i, t[a]), i.appendChild(t[a]);
            var n = t[a].parentElement;
            n.className += "parallax__container", "relative" !== window.getComputedStyle(n.parentElement, null).getPropertyValue("position") && (n.parentElement.style.position = "relative");
            var o = t[a].dataset.parallaxImage;
            void 0 !== o && (t[a].style.backgroundImage = "url(" + o + ")", 1 === t[a].classList.length && "parallax" === t[a].classList[0] && (t[a].style.backgroundRepeat = "no-repeat", t[a].style.backgroundPosition = "center", t[a].style.backgroundSize = "cover"))
        }
        document.addEventListener("readystatechange", (function (a) {
            var i, n;
            "complete" === a.target.readyState && (i = t, (n = e.speed) < 1 && (n = 1), calculateHeight(i, n), mobile || window.addEventListener("resize", (function () {
                windowHeight = window.innerHeight, calculateHeight(i, n)
            })), window.addEventListener("scroll", (function () {
                animateParallax(i, n)
            })))
        }))
    }
};