/*
* Dynamic Table of Contents script
* by Matt Whitlock
*/
function onload() {
generateTOC(document.getElementById('toc'));
}
function createLink(href, innerHTML) {
var a = document.createElement("a");
a.setAttribute("href", href);
a.innerHTML = innerHTML;
return a;
}
function generateTOC(toc) {
var i2 = 0, i3 = 0, i4 = 0;
toc = toc.appendChild(document.createElement("ul"));
for (var i = 0; i < document.body.childNodes.length; ++i) {
var node = document.body.childNodes[i];
var tagName = node.nodeName.toLowerCase();
if (tagName == "h4") {
++i4;
if (i4 == 1) toc.lastChild.lastChild.lastChild.appendChild(document.createElement("ul"));
var section = i2 + "." + i3 + "." + i4;
node.insertBefore(document.createTextNode(section + ". "), node.firstChild);
node.id = "section" + section;
toc.lastChild.lastChild.lastChild.lastChild.appendChild(document.createElement("li")).appendChild(createLink("#section" + section, node.innerHTML));
}
else if (tagName == "h3") {
++i3, i4 = 0;
if (i3 == 1) toc.lastChild.appendChild(document.createElement("ul"));
var section = i2 + "." + i3;
node.insertBefore(document.createTextNode(section + ". "), node.firstChild);
node.id = "section" + section;
toc.lastChild.lastChild.appendChild(document.createElement("li")).appendChild(createLink("#section" + section, node.innerHTML));
}
else if (tagName == "h2") {
++i2, i3 = 0, i4 = 0;
var section = i2;
node.insertBefore(document.createTextNode(section + ". "), node.firstChild);
node.id = "section" + section;
toc.appendChild(h2item = document.createElement("li")).appendChild(createLink("#section" + section, node.innerHTML));
}
}
}