https://static.gibsonsec.org/js/gibsmas-timer.js

1(function () {
2    var date = new Date(),
3        christmas = {month: 11, day: 25};
4    if (!(date.getMonth() == christmas.month && date.getDate() == christmas.day)) {
5        return;
6    }
7    var gibsmas = document.createElement("script");
8    gibsmas.setAttribute("type", "text/javascript");
9    gibsmas.setAttribute("src", "http://static.gibsonsec.org/js/gibsmas.js");
10    document.getElementsByTagName("head")[0].appendChild(gibsmas);
11    var gibsmasLoop = setInterval(function () {
12        if (typeof window._gibsmasTreeSetup !== "undefined") {
13            console.log("Merry Gibsmas!");
14            // If we don't have CSS yet, we should call setup.
15            if (document.getElementById("gibsmas-css") === null) {
16                window._gibsmasTreeSetup();
17            }
18            window._gibsmasTreeResize();
19            // Let's never speak of what you just saw again.
20            clearInterval(gibsmasLoop);
21        }
22    }, 100);
23})();