eBay: alle Fotos auf einmal öffnen

// Add a button that opens every gallery photo at full size in tabs
function addOpenAllButton() {
  if (document.getElementById('jz-eby-openall')) { return; }
  const gallery = document.querySelector('.ux-image-grid, .ux-image-filmstrip-carousel');
  if (!gallery) { return; }
  const btn = document.createElement('button');
  btn.id = 'jz-eby-openall';
  btn.type = 'button';
  btn.textContent = 'Open all photos';
  btn.style.cssText = 'margin:8px 0;padding:6px 12px;font-weight:700;'
    + 'background:#2b3a8c;color:#fff;border:0;border-radius:6px;cursor:pointer';
  btn.addEventListener('click', function () {
    const seen = {};
    gallery.querySelectorAll('img[src]').forEach(function (img) {
      const full = img.src.replace(/s-l\d+/, 's-l1600');
      if (!seen[full]) { seen[full] = 1; window.open(full, '_blank', 'noopener'); }
    });
  });
  gallery.parentElement.insertBefore(btn, gallery);
}
addOpenAllButton();
const obs = new MutationObserver(addOpenAllButton);
obs.observe(document.documentElement, { childList: true, subtree: true });