Floating div based on scrollpoint

floating div

loadPCROverlay: function () {
            try {
                var f = ta.id("CHECK_RATE");
                var h = ta.id("PERSISTENT_CHECK_RATES_CONTENT");
                var d = window.getScroll();
                if (!h) {
                    return
                }
                if (!f || !d) {
                    h.dispose();
                    return
                }
                ta.store("pcr.scrollPoint", f.getPosition().y);
                var j = false;
                if (d.y >= ta.retrieve("pcr.scrollPoint")) {
                    j = true
                }
                var g = h.get("html");
                h.dispose();
                ta.store("pcr.overlay", new ta.overlays.AbsoluteOverlay({
                    toWindow: false,
                    autoShow: j,
                    positionType: "fixed",
                    permanent: true,
                    zIndex: "9996",
                    style: "persistentCR",
                    content: g,
                    onClose: function () {
                        ta.store("pcr.keepHidden", true);
                        Cookie.writeSession("CPCR", 1);
                        new Request({
                            url: "/ActionRecord?action=persistent_cr_close"
                        }).send()
                    }
                }));
                window.removeEvent("scroll", ta.overlays.Factory.loadPCROverlay);
                window.addEvent("scroll", ta.commerce.checkrates.positionCheckRates)
            } catch (i) {
                window.removeEvent("scroll", ta.overlays.Factory.loadPCROverlay);
                ta.util.error.record(i, "pcr - scroll init");
                return false
            }
        }