+def add_fundraising(doc, fundraising):
+    # Before each naglowek_rozdzial and naglowek_scena and in the end
+    spots = []
+    for naglowek in doc.xpath('//naglowek_czesc|//naglowek_akt'):
+        spot = etree.Element('f_spot')
+        naglowek.addprevious(spot)
+        spots.append(spot)
+    spot = etree.Element('f_spot')
+    doc.getroot()[-1].append(spot)
+    spots.append(spot)
+    e = len(spots)
+    nfunds = len(fundraising)
+    if e > 4 * nfunds:
+        nfunds *= 2
+    for f in range(nfunds):
+        spot_index = int(f / nfunds * e)
+        spots[spot_index].set('active', 'true')
+        elem = etree.fromstring('<f_spot>' + fundraising[f % len(fundraising)] + '</f_spot>')
+        spots[spot_index].text = elem.text
+        for c in elem:
+            spots[spot_index].append(c)
+
+