https://tgf-hfr.ca/js/cross_framing_protection.js?v=5.0.4

1/* vim: set expandtab sw=4 ts=4 sts=4: */
2/**
3 * Conditionally included if framing is not allowed
4 */
5if (self === top) {
6    var styleElement = document.getElementById('cfs-style');
7    // check if styleElement has already been removed
8    // to avoid frequently reported js error
9    if (typeof(styleElement) !== 'undefined' && styleElement !== null) {
10        styleElement.parentNode.removeChild(styleElement);
11    }
12} else {
13    top.location = self.location;
14}