File Content: toc.js ;(function () { var wrapper = document.getElementById('wrapper') var els = Array.prototype.slice.call(wrapper.getElementsByTagName('*'), 0) .filter(function (el) { return el.parentNode === wrapper && el.tagName.match(/H[1-6]/) && el.id }) var l = 2 var toc = document.createElement('ul') toc.innerHTML = els.map(function (el) { var i = el.tagName.charAt(1) var out = '' while (i > l) { out += '<ul>' l++ } while (i < l) { out += '</ul>' l-- } out += '<li><a href=\'#' + el.id + '\'>' + (el.innerText || el.text || el.innerHTML) + '</a>' return out }).join('\n') toc.id = 'toc' document.body.appendChild(toc) })() Submit