(function() {try {var currentPath = window.location.pathname;var produktUrl = currentPath.replace(/^\//, '').replace(/\.html$/, '');// WICHTIG: Buttons NICHT anzeigen, wenn "muster" in der URL stehtif (produktUrl.toLowerCase().indexOf('muster') > -1) {return;}var musterUrls = [];// === MUSTER-BUTTON LOGIK ===// Fall 1: Rohplattenif (produktUrl.indexOf('rohplatte-') === 0) {var material = produktUrl.replace('rohplatte-', '');if (material) {musterUrls.push('/muster-' + material + '.html');}}// Funktion zum Prüfen einer URLfunction pruefeUrl(url, callback) {var xhr = new XMLHttpRequest();xhr.open('HEAD', url, true);xhr.onload = function() {callback(xhr.status === 200, url);};xhr.onerror = function() {callback(false, url);};xhr.send();}// Alle Varianten durchgehenfunction pruefeNaechsteUrl(index) {if (index >= musterUrls.length) {return;}var url = musterUrls[index];pruefeUrl(url, function(existiert) {if (existiert) {document.getElementById('muster-link').href = url;document.getElementById('muster-button-wrapper').style.display = 'inline-block';} else {pruefeNaechsteUrl(index + 1);}});}if (musterUrls.length > 0) {pruefeNaechsteUrl(0);}} catch(e) {}})();