Function findPolygon

internal/driver/html/common.js:552–559

(elem)

  }

  function findPolygon(elem) {
    if (elem.localName == 'polygon') return elem;
    for (const c of elem.children) {
      const p = findPolygon(c);
      if (p != null) return p;
    }
    return null;
  }

  function setSampleIndexLink(si) {
    const elem = document.getElementById('sampletype-' + si);