Remove Kartra analytics URL parameters

<script>
/*
 * Remove Kartra analytics tracking parameters from link URLs.
 * Breaks Kartra tracking, but may be required if other software breaks.
 * For Kartra pages, add to body tracking.
 */
function untrackLinks () {
    for (const link of document.querySelectorAll('a[href*="kref"]')) {
    const url = new URL(link.href), sp = url.searchParams;
    sp.delete('kref');
    sp.delete('kuid');
    url.search = sp.toString();
    link.href = url.toString();
    }
}
untrackLinks();
(() => {
    const mo = new MutationObserver(mrs => {
    for (const mr of mrs) {
        if (mr.attributeName) {
        untrackLinks();
        return;
        }
    }
    });
    mo.observe(document.body, {
    subtree: true, childList: true, attributes: true,
    attributeFilter: [ 'href' ]
    });
})();
</script>