https://qptv.org/themes/gavias_great/js/sidebar-sticky.js?v=8.9.15

1! function(i) {
2    i.fn.theiaStickySidebar = function(t) {
3        var o = {
4            containerSelector: "",
5            additionalMarginTop: 0,
6            additionalMarginBottom: 0,
7            updateSidebarHeight: !0,
8            minWidth: 0
9        };
10        t = i.extend(o, t), t.additionalMarginTop = parseInt(t.additionalMarginTop) || 0, t.additionalMarginBottom = parseInt(t.additionalMarginBottom) || 0, i("head").append(i('<style>.theiaStickySidebar:after {content: ""; display: table; clear: both;}</style>')), this.each(function() {
11            function o() {
12                e.fixedScrollTop = 0, e.sidebar.css({
13                    "min-height": "1px"
14                }), e.stickySidebar.css({
15                    position: "static",
16                    width: ""
17                })
18            }
19
20            function a(t) {
21                var o = t.height();
22                return t.children().each(function() {
23                    o = Math.max(o, i(this).height())
24                }), o
25            }
26            var e = {};
27            e.sidebar = i(this), e.options = t || {}, e.container = i(e.options.containerSelector), 0 == e.container.size() && (e.container = e.sidebar.parent()), e.sidebar.parents().css("-webkit-transform", "none"), e.sidebar.css({
28                position: "relative",
29                overflow: "visible",
30                "-webkit-box-sizing": "border-box",
31                "-moz-box-sizing": "border-box",
32                "box-sizing": "border-box"
33            }), e.stickySidebar = e.sidebar.find(".theiaStickySidebar"), 0 == e.stickySidebar.length && (e.sidebar.find("script").remove(), e.stickySidebar = i("<div>").addClass("theiaStickySidebar").append(e.sidebar.children()), e.sidebar.append(e.stickySidebar)), e.marginTop = parseInt(e.sidebar.css("margin-top")), e.marginBottom = parseInt(e.sidebar.css("margin-bottom")), e.paddingTop = parseInt(e.sidebar.css("padding-top")), e.paddingBottom = parseInt(e.sidebar.css("padding-bottom"));
34            var d = e.stickySidebar.offset().top,
35                r = e.stickySidebar.outerHeight();
36            e.stickySidebar.css("padding-top", 1), e.stickySidebar.css("padding-bottom", 1), d -= e.stickySidebar.offset().top, r = e.stickySidebar.outerHeight() - r - d, 0 == d ? (e.stickySidebar.css("padding-top", 0), e.stickySidebarPaddingTop = 0) : e.stickySidebarPaddingTop = 1, 0 == r ? (e.stickySidebar.css("padding-bottom", 0), e.stickySidebarPaddingBottom = 0) : e.stickySidebarPaddingBottom = 1, e.previousScrollTop = null, e.fixedScrollTop = 0, o(), e.onScroll = function(e) {
37                if (e.stickySidebar.is(":visible")) {
38                    if (i("body").width() < e.options.minWidth) return void o();
39                    if (e.sidebar.outerWidth(!0) + 50 > e.container.width()) return void o();
40                    var d = i(document).scrollTop(),
41                        r = "static";
42                    if (d >= e.container.offset().top + (e.paddingTop + e.marginTop - e.options.additionalMarginTop)) {
43                        var n, s = e.paddingTop + e.marginTop + t.additionalMarginTop,
44                            c = e.paddingBottom + e.marginBottom + t.additionalMarginBottom,
45                            p = e.container.offset().top,
46                            b = e.container.offset().top + a(e.container),
47                            g = 0 + t.additionalMarginTop,
48                            l = e.stickySidebar.outerHeight() + s + c < i(window).height();
49                        n = l ? g + e.stickySidebar.outerHeight() : i(window).height() - e.marginBottom - e.paddingBottom - t.additionalMarginBottom;
50                        var f = p - d + e.paddingTop + e.marginTop,
51                            S = b - d - e.paddingBottom - e.marginBottom,
52                            h = e.stickySidebar.offset().top - d,
53                            m = e.previousScrollTop - d;
54                        "fixed" == e.stickySidebar.css("position") && (h += m), h = m > 0 ? Math.min(h, g) : Math.max(h, n - e.stickySidebar.outerHeight()), h = Math.max(h, f), h = Math.min(h, S - e.stickySidebar.outerHeight());
55                        var y = e.container.height() == e.stickySidebar.outerHeight();
56                        r = (y || h != g) && (y || h != n - e.stickySidebar.outerHeight()) ? d + h - e.sidebar.offset().top - e.paddingTop <= t.additionalMarginTop ? "static" : "absolute" : "fixed"
57                    }
58                    if ("fixed" == r) e.stickySidebar.css({
59                        position: "fixed",
60                        width: e.sidebar.width(),
61                        top: h,
62                        left: e.sidebar.offset().left + parseInt(e.sidebar.css("padding-left"))
63                    });
64                    else if ("absolute" == r) {
65                        var k = {};
66                        "absolute" != e.stickySidebar.css("position") && (k.position = "absolute", k.top = d + h - e.sidebar.offset().top - e.stickySidebarPaddingTop 

66- e.stickySidebarPaddingBottom), k.width = e.sidebar.width(), k.left = "", e.stickySidebar.css(k)
67                    } else "static" == r && o();
68                    "static" != r && 1 == e.options.updateSidebarHeight && e.sidebar.css({
69                        "min-height": e.stickySidebar.outerHeight() + e.stickySidebar.offset().top - e.sidebar.offset().top + e.paddingBottom
70                    }), e.previousScrollTop = d
71                }
72            }, e.onScroll(e), i(document).scroll(function(i) {
73                return function() {
74                    i.onScroll(i)
75                }
76            }(e)), i(window).resize(function(i) {
77                return function() {
78                    i.stickySidebar.css({
79                        position: "static"
80                    }), i.onScroll(i)
81                }
82            }(e))
83        })
84    }
85}(jQuery);