<script>
var categoryNames = [];
var pageMap = {};
document.querySelectorAll('li.category2folder').forEach(function(e,i){
categoryNames[i] = e.innerText.replace(/\n/g,''); var parentDiv = e.parentNode.parentNode; parentDiv.style.display = 'none'; if (parentDiv.nextElementSibling.tagName === 'H2') { parentDiv.nextElementSibling.style.display = 'none'; }
});
document.querySelectorAll('ul.category2file').forEach(function(e){
e.style.display = 'none'; e.querySelectorAll('li.category2file').forEach(function(e2){ var title = e2.innerText.replace(/\n/g,''); if (pageMap[title] === undefined) { pageMap[title] = [e2, 1]; } else { pageMap[title][1]++; } });
});
document.write('<ul>');
for (var key in pageMap) {
if (pageMap[key][1] === categoryNames.length) { document.write(pageMap[key][0].outerHTML); }
}
document.write('</ul>');
</script>