/*
  hey, [be]Lazy.js - v1.8.2 - 2016.10.25
  A fast, small and dependency free lazy load script (https://github.com/dinbror/blazy)
  (c) Bjoern Klinggaard - @bklinggaard - http://dinbror.dk/blazy
*/

! function(t, e) {
    "function" == typeof define && define.amd ? define(e) : "object" == typeof exports ? module.exports = e() : t.LazyLoad = e()
}(this, function() {
    function t(t) {
        var o = t._util;
        o.elements = function(t) {
            for (var e = [], o = (t = t.root.querySelectorAll(t.selector)).length; o--; e.unshift(t[o]));
            return e
        }(t.options), o.count = o.elements.length, o.destroyed && (o.destroyed = !1, t.options.container && f(t.options.container, function(t) {
            l(t, "scroll", o.validateT)
        }), l(window, "resize", o.saveViewportOffsetT), l(window, "resize", o.validateT), l(window, "scroll", o.validateT)), e(t)
    }

    function e(t) {
        for (var e = t._util, n = 0; n < e.count; n++) {
            var s, i = e.elements[n],
                a = i;
            s = t.options;
            var c = a.getBoundingClientRect();
            s.container && h && (a = a.closest(s.containerClass)) ? s = !!o(a = a.getBoundingClientRect(), v) && o(c, {
                top: a.top - s.offset,
                right: a.right + s.offset,
                bottom: a.bottom + s.offset,
                left: a.left - s.offset
            }) : s = o(c, v), (s || r(i, t.options.successClass)) && (t.load(i), e.elements.splice(n, 1), e.count--, n--)
        }
        0 === e.count && t.destroy()
    }

    function o(t, e) {
        return t.right >= e.left && t.bottom >= e.top && t.left <= e.right && t.top <= e.bottom
    }

    function n(t, e, o) {
        if (!r(t, o.successClass) && (e || o.loadInvisible || 0 < t.offsetWidth && 0 < t.offsetHeight))
            if (e = t.getAttribute(p) || t.getAttribute(o.src)) {
                var n = (e = e.split(o.separator))[m && 1 < e.length ? 1 : 0],
                    c = t.getAttribute(o.srcset),
                    d = "img" === t.nodeName.toLowerCase(),
                    v = (e = t.parentNode) && "picture" === e.nodeName.toLowerCase();
                if (d || void 0 === t.src) {
                    var h = new Image,
                        g = function() {
                            o.error && o.error(t, "invalid"), a(t, o.errorClass), u(h, "error", g), u(h, "load", w)
                        },
                        w = function() {
                            d ? v || i(t, n, c) : t.style.backgroundImage = 'url("' + n + '")', s(t, o), u(h, "load", w), u(h, "error", g)
                        };
                    v && (h = t, f(e.getElementsByTagName("source"), function(t) {
                        var e = o.srcset,
                            n = t.getAttribute(e);
                        n && (t.setAttribute("srcset", n), t.removeAttribute(e))
                    })), l(h, "error", g), l(h, "load", w), i(h, n, c)
                } else t.src = n, s(t, o)
            } else "video" === t.nodeName.toLowerCase() ? (f(t.getElementsByTagName("source"), function(t) {
                var e = o.src,
                    n = t.getAttribute(e);
                n && (t.setAttribute("src", n), t.removeAttribute(e))
            }), t.load(), s(t, o)) : (o.error && o.error(t, "missing"), a(t, o.errorClass))
    }

    function s(t, e) {
        a(t, e.successClass), e.success && e.success(t), t.removeAttribute(e.src), t.removeAttribute(e.srcset), f(e.breakpoints, function(e) {
            t.removeAttribute(e.src)
        })
    }

    function i(t, e, o) {
        o && t.setAttribute("srcset", o), t.src = e
    }

    function r(t, e) {
        return -1 !== (" " + t.className + " ").indexOf(" " + e + " ")
    }

    function a(t, e) {
        r(t, e) || (t.className += " " + e)
    }

    function c(t) {
        v.bottom = (window.innerHeight || document.documentElement.clientHeight) + t, v.right = (window.innerWidth || document.documentElement.clientWidth) + t
    }

    function l(t, e, o) {
        t.attachEvent ? t.attachEvent && t.attachEvent("on" + e, o) : t.addEventListener(e, o, {
            capture: !1,
            passive: !0
        })
    }

    function u(t, e, o) {
        t.detachEvent ? t.detachEvent && t.detachEvent("on" + e, o) : t.removeEventListener(e, o, {
            capture: !1,
            passive: !0
        })
    }

    function f(t, e) {
        if (t && e)
            for (var o = t.length, n = 0; n < o && !1 !== e(t[n], n); n++);
    }

    function d(t, e, o) {
        var n = 0;
        return function() {
            var s = +new Date;
            s - n < e || (n = s, t.apply(o, arguments))
        }
    }
    var p, v, m, h;
    return function(o) {
        if (!document.querySelectorAll) {
            var s = document.createStyleSheet();
            document.querySelectorAll = function(t, e, o, n, i) {
                for (i = document.all, e = [], o = (t = t.replace(/\[for\b/gi, "[htmlFor").split(",")).length; o--;) {
                    for (s.addRule(t[o], "k:v"), n = i.length; n--;) i[n].currentStyle.k && e.push(i[n]);
                    s.removeRule(0)
                }
                return e
            }
        }
        var i = this,
            r = i._util = {};
        r.elements = [], r.destroyed = !0, i.options = o || {}, i.options.error = i.options.error || !1, i.options.offset = i.options.offset || 100, i.options.root = i.options.root || document, i.options.success = i.options.success || !1, i.options.selector = i.options.selector || ".lazy-laod", i.options.separator = i.options.separator || "|", i.options.containerClass = i.options.container, i.options.container = !!i.options.containerClass && document.querySelectorAll(i.options.containerClass), i.options.errorClass = i.options.errorClass || "lazy-error", i.options.breakpoints = i.options.breakpoints || !1, i.options.loadInvisible = i.options.loadInvisible || !1, i.options.successClass = i.options.successClass || "lazy-loaded", i.options.validateDelay = i.options.validateDelay || 25, i.options.saveViewportOffsetDelay = i.options.saveViewportOffsetDelay || 50, i.options.srcset = i.options.srcset || "data-srcset", i.options.src = p = i.options.src || "data-src", h = Element.prototype.closest, m = 1 < window.devicePixelRatio, (v = {}).top = 0 - i.options.offset, v.left = 0 - i.options.offset, i.revalidate = function() {
            t(i)
        }, i.load = function(t, e) {
            var o = this.options;
            void 0 === t.length ? n(t, e, o) : f(t, function(t) {
                n(t, e, o)
            })
        }, i.destroy = function() {
            var t = this._util;
            this.options.container && f(this.options.container, function(e) {
                u(e, "scroll", t.validateT)
            }), u(window, "scroll", t.validateT), u(window, "resize", t.validateT), u(window, "resize", t.saveViewportOffsetT), t.count = 0, t.elements.length = 0, t.destroyed = !0
        }, r.validateT = d(function() {
            e(i)
        }, i.options.validateDelay, i), r.saveViewportOffsetT = d(function() {
            c(i.options.offset)
        }, i.options.saveViewportOffsetDelay, i), c(i.options.offset), f(i.options.breakpoints, function(t) {
            if (t.width >= window.screen.width) return p = t.src, !1
        }), setTimeout(function() {
            t(i)
        })
    }
});