/*!
Waypoints - 4.0.0
Copyright © 2011-2015 Caleb Troughton
Licensed under the MIT license.
https://github.com/imakewebthings/waypoints/blob/master/licenses.txt
*/
!(function () {
    "use strict";
    function t(o) {
        if (!o) throw new Error("No options passed to Waypoint constructor");
        if (!o.element) throw new Error("No element option passed to Waypoint constructor");
        if (!o.handler) throw new Error("No handler option passed to Waypoint constructor");
        (this.key = "waypoint-" + e),
            (this.options = t.Adapter.extend({}, t.defaults, o)),
            (this.element = this.options.element),
            (this.adapter = new t.Adapter(this.element)),
            (this.callback = o.handler),
            (this.axis = this.options.horizontal ? "horizontal" : "vertical"),
            (this.enabled = this.options.enabled),
            (this.triggerPoint = null),
            (this.group = t.Group.findOrCreate({ name: this.options.group, axis: this.axis })),
            (this.context = t.Context.findOrCreateByElement(this.options.context)),
            t.offsetAliases[this.options.offset] && (this.options.offset = t.offsetAliases[this.options.offset]),
            this.group.add(this),
            this.context.add(this),
            (i[this.key] = this),
            (e += 1);
    }
    var e = 0,
        i = {};
    (t.prototype.queueTrigger = function (t) {
        this.group.queueTrigger(this, t);
    }),
        (t.prototype.trigger = function (t) {
            this.enabled && this.callback && this.callback.apply(this, t);
        }),
        (t.prototype.destroy = function () {
            this.context.remove(this), this.group.remove(this), delete i[this.key];
        }),
        (t.prototype.disable = function () {
            return (this.enabled = !1), this;
        }),
        (t.prototype.enable = function () {
            return this.context.refresh(), (this.enabled = !0), this;
        }),
        (t.prototype.next = function () {
            return this.group.next(this);
        }),
        (t.prototype.previous = function () {
            return this.group.previous(this);
        }),
        (t.invokeAll = function (t) {
            var e = [];
            for (var o in i) e.push(i[o]);
            for (var n = 0, r = e.length; r > n; n++) e[n][t]();
        }),
        (t.destroyAll = function () {
            t.invokeAll("destroy");
        }),
        (t.disableAll = function () {
            t.invokeAll("disable");
        }),
        (t.enableAll = function () {
            t.invokeAll("enable");
        }),
        (t.refreshAll = function () {
            t.Context.refreshAll();
        }),
        (t.viewportHeight = function () {
            return window.innerHeight || document.documentElement.clientHeight;
        }),
        (t.viewportWidth = function () {
            return document.documentElement.clientWidth;
        }),
        (t.adapters = []),
        (t.defaults = { context: window, continuous: !0, enabled: !0, group: "default", horizontal: !1, offset: 0 }),
        (t.offsetAliases = {
            "bottom-in-view": function () {
                return this.context.innerHeight() - this.adapter.outerHeight();
            },
            "right-in-view": function () {
                return this.context.innerWidth() - this.adapter.outerWidth();
            },
        }),
        (window.Waypoint = t);
})(),
    (function () {
        "use strict";
        function t(t) {
            window.setTimeout(t, 1e3 / 60);
        }
        function e(t) {
            (this.element = t),
                (this.Adapter = n.Adapter),
                (this.adapter = new this.Adapter(t)),
                (this.key = "waypoint-context-" + i),
                (this.didScroll = !1),
                (this.didResize = !1),
                (this.oldScroll = { x: this.adapter.scrollLeft(), y: this.adapter.scrollTop() }),
                (this.waypoints = { vertical: {}, horizontal: {} }),
                (t.waypointContextKey = this.key),
                (o[t.waypointContextKey] = this),
                (i += 1),
                this.createThrottledScrollHandler(),
                this.createThrottledResizeHandler();
        }
        var i = 0,
            o = {},
            n = window.Waypoint,
            r = window.onload;
        (e.prototype.add = function (t) {
            var e = t.options.horizontal ? "horizontal" : "vertical";
            (this.waypoints[e][t.key] = t), this.refresh();
        }),
            (e.prototype.checkEmpty = function () {
                var t = this.Adapter.isEmptyObject(this.waypoints.horizontal),
                    e = this.Adapter.isEmptyObject(this.waypoints.vertical);
                t && e && (this.adapter.off(".waypoints"), delete o[this.key]);
            }),
            (e.prototype.createThrottledResizeHandler = function () {
                function t() {
                    e.handleResize(), (e.didResize = !1);
                }
                var e = this;
                this.adapter.on("resize.waypoints", function () {
                    e.didResize || ((e.didResize = !0), n.requestAnimationFrame(t));
                });
            }),
            (e.prototype.createThrottledScrollHandler = function () {
                function t() {
                    e.handleScroll(), (e.didScroll = !1);
                }
                var e = this;
                this.adapter.on("scroll.waypoints", function () {
                    (!e.didScroll || n.isTouch) && ((e.didScroll = !0), n.requestAnimationFrame(t));
                });
            }),
            (e.prototype.handleResize = function () {
                n.Context.refreshAll();
            }),
            (e.prototype.handleScroll = function () {
                var t = {},
                    e = {
                        horizontal: { newScroll: this.adapter.scrollLeft(), oldScroll: this.oldScroll.x, forward: "right", backward: "left" },
                        vertical: { newScroll: this.adapter.scrollTop(), oldScroll: this.oldScroll.y, forward: "down", backward: "up" },
                    };
                for (var i in e) {
                    var o = e[i],
                        n = o.newScroll > o.oldScroll,
                        r = n ? o.forward : o.backward;
                    for (var s in this.waypoints[i]) {
                        var a = this.waypoints[i][s],
                            l = o.oldScroll < a.triggerPoint,
                            h = o.newScroll >= a.triggerPoint,
                            p = l && h,
                            u = !l && !h;
                        (p || u) && (a.queueTrigger(r), (t[a.group.id] = a.group));
                    }
                }
                for (var c in t) t[c].flushTriggers();
                this.oldScroll = { x: e.horizontal.newScroll, y: e.vertical.newScroll };
            }),
            (e.prototype.innerHeight = function () {
                return this.element == this.element.window ? n.viewportHeight() : this.adapter.innerHeight();
            }),
            (e.prototype.remove = function (t) {
                delete this.waypoints[t.axis][t.key], this.checkEmpty();
            }),
            (e.prototype.innerWidth = function () {
                return this.element == this.element.window ? n.viewportWidth() : this.adapter.innerWidth();
            }),
            (e.prototype.destroy = function () {
                var t = [];
                for (var e in this.waypoints) for (var i in this.waypoints[e]) t.push(this.waypoints[e][i]);
                for (var o = 0, n = t.length; n > o; o++) t[o].destroy();
            }),
            (e.prototype.refresh = function () {
                var t,
                    e = this.element == this.element.window,
                    i = e ? void 0 : this.adapter.offset(),
                    o = {};
                this.handleScroll(),
                    (t = {
                        horizontal: { contextOffset: e ? 0 : i.left, contextScroll: e ? 0 : this.oldScroll.x, contextDimension: this.innerWidth(), oldScroll: this.oldScroll.x, forward: "right", backward: "left", offsetProp: "left" },
                        vertical: { contextOffset: e ? 0 : i.top, contextScroll: e ? 0 : this.oldScroll.y, contextDimension: this.innerHeight(), oldScroll: this.oldScroll.y, forward: "down", backward: "up", offsetProp: "top" },
                    });
                for (var r in t) {
                    var s = t[r];
                    for (var a in this.waypoints[r]) {
                        var l,
                            h,
                            p,
                            u,
                            c,
                            d = this.waypoints[r][a],
                            f = d.options.offset,
                            w = d.triggerPoint,
                            y = 0,
                            g = null == w;
                        d.element !== d.element.window && (y = d.adapter.offset()[s.offsetProp]),
                            "function" == typeof f ? (f = f.apply(d)) : "string" == typeof f && ((f = parseFloat(f)), d.options.offset.indexOf("%") > -1 && (f = Math.ceil((s.contextDimension * f) / 100))),
                            (l = s.contextScroll - s.contextOffset),
                            (d.triggerPoint = y + l - f),
                            (h = w < s.oldScroll),
                            (p = d.triggerPoint >= s.oldScroll),
                            (u = h && p),
                            (c = !h && !p),
                            !g && u
                                ? (d.queueTrigger(s.backward), (o[d.group.id] = d.group))
                                : !g && c
                                ? (d.queueTrigger(s.forward), (o[d.group.id] = d.group))
                                : g && s.oldScroll >= d.triggerPoint && (d.queueTrigger(s.forward), (o[d.group.id] = d.group));
                    }
                }
                return (
                    n.requestAnimationFrame(function () {
                        for (var t in o) o[t].flushTriggers();
                    }),
                    this
                );
            }),
            (e.findOrCreateByElement = function (t) {
                return e.findByElement(t) || new e(t);
            }),
            (e.refreshAll = function () {
                for (var t in o) o[t].refresh();
            }),
            (e.findByElement = function (t) {
                return o[t.waypointContextKey];
            }),
            (window.onload = function () {
                r && r(), e.refreshAll();
            }),
            (n.requestAnimationFrame = function (e) {
                var i = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || t;
                i.call(window, e);
            }),
            (n.Context = e);
    })(),
    (function () {
        "use strict";
        function t(t, e) {
            return t.triggerPoint - e.triggerPoint;
        }
        function e(t, e) {
            return e.triggerPoint - t.triggerPoint;
        }
        function i(t) {
            (this.name = t.name), (this.axis = t.axis), (this.id = this.name + "-" + this.axis), (this.waypoints = []), this.clearTriggerQueues(), (o[this.axis][this.name] = this);
        }
        var o = { vertical: {}, horizontal: {} },
            n = window.Waypoint;
        (i.prototype.add = function (t) {
            this.waypoints.push(t);
        }),
            (i.prototype.clearTriggerQueues = function () {
                this.triggerQueues = { up: [], down: [], left: [], right: [] };
            }),
            (i.prototype.flushTriggers = function () {
                for (var i in this.triggerQueues) {
                    var o = this.triggerQueues[i],
                        n = "up" === i || "left" === i;
                    o.sort(n ? e : t);
                    for (var r = 0, s = o.length; s > r; r += 1) {
                        var a = o[r];
                        (a.options.continuous || r === o.length - 1) && a.trigger([i]);
                    }
                }
                this.clearTriggerQueues();
            }),
            (i.prototype.next = function (e) {
                this.waypoints.sort(t);
                var i = n.Adapter.inArray(e, this.waypoints),
                    o = i === this.waypoints.length - 1;
                return o ? null : this.waypoints[i + 1];
            }),
            (i.prototype.previous = function (e) {
                this.waypoints.sort(t);
                var i = n.Adapter.inArray(e, this.waypoints);
                return i ? this.waypoints[i - 1] : null;
            }),
            (i.prototype.queueTrigger = function (t, e) {
                this.triggerQueues[e].push(t);
            }),
            (i.prototype.remove = function (t) {
                var e = n.Adapter.inArray(t, this.waypoints);
                e > -1 && this.waypoints.splice(e, 1);
            }),
            (i.prototype.first = function () {
                return this.waypoints[0];
            }),
            (i.prototype.last = function () {
                return this.waypoints[this.waypoints.length - 1];
            }),
            (i.findOrCreate = function (t) {
                return o[t.axis][t.name] || new i(t);
            }),
            (n.Group = i);
    })(),
    (function () {
        "use strict";
        function t(t) {
            this.$element = e(t);
        }
        var e = window.jQuery,
            i = window.Waypoint;
        e.each(["innerHeight", "innerWidth", "off", "offset", "on", "outerHeight", "outerWidth", "scrollLeft", "scrollTop"], function (e, i) {
            t.prototype[i] = function () {
                var t = Array.prototype.slice.call(arguments);
                return this.$element[i].apply(this.$element, t);
            };
        }),
            e.each(["extend", "inArray", "isEmptyObject"], function (i, o) {
                t[o] = e[o];
            }),
            i.adapters.push({ name: "jquery", Adapter: t }),
            (i.Adapter = t);
    })(),
    (function () {
        "use strict";
        function t(t) {
            return function () {
                var i = [],
                    o = arguments[0];
                return (
                    t.isFunction(arguments[0]) && ((o = t.extend({}, arguments[1])), (o.handler = arguments[0])),
                    this.each(function () {
                        var n = t.extend({}, o, { element: this });
                        "string" == typeof n.context && (n.context = t(this).closest(n.context)[0]), i.push(new e(n));
                    }),
                    i
                );
            };
        }
        var e = window.Waypoint;
        window.jQuery && (window.jQuery.fn.waypoint = t(window.jQuery)), window.Zepto && (window.Zepto.fn.waypoint = t(window.Zepto));
    })();
