Source of faq.js

function loadCategories() {

  Ajax.getContentFromURI("categories.asp",xGetElementById("toctop"),updateCategories);

}

function updateCategories(xdata,ul) {

  var catlist = xdata.selectNodes("//Category");

  for (var i = 0; i < catlist.length; i++) {

    var li = document.createElement("li");

    xAddClass(li,"collapsed");

    var a = document.createElement("a");

    Ajax.copyChildren(catlist[i],a);

    a.id = catlist[i].getAttribute("id");

    a.href = "#";

    a.onclick = expandCategoryToc;

    li.appendChild(a);

    ul.appendChild(li);

  }

}

xAddEventListener(window,"load",loadCategories);

function expandCategoryToc() {

  var li = this.parentNode; 

  if (li.nodeName.toLowerCase() != "li") { throw("Expected LI element as parent of A element"); }

  if (li.nextSibling && li.nextSibling.nodeName.toLowerCase() == "ul") {

    doExpandOrCollapse(li);

  } else {

    var ul = document.createElement("ul");

    li.parentNode.insertBefore(ul,li.nextSibling);

    Ajax.getContentFromURI("questions.asp?category="+this.id,ul,updateCategoryQuestions);

  }

  return false;

}

function updateCategoryQuestions(xdata,ul) {

  var qlist = xdata.selectNodes("//Question");

  for (var i = 0; i < qlist.length; i++) {

    var li = document.createElement("li");

    var a = document.createElement("a");

    Ajax.copyChildren(qlist[i],a);

    a.id = "qa_" + qlist[i].getAttribute("id");

    a.href = "#";

    a.onclick = displayQAPair;

    li.appendChild(a);

    ul.appendChild(li);

  }

  if (ul.previousSibling) xAddClass(ul.previousSibling,"expanded");

}

function doExpandOrCollapse(li) {

  // get second-level UL element

  var tocLev2 = li.nextSibling; 

  if (tocLev2.nodeName.toLowerCase() != "ul") return;

  var collapse = tocLev2.style.display == "";

  li.className = collapse ? "collapsed" : "expanded";

  tocLev2.style.display = collapse ? "none" : "";

  return false;

}

function displayQAPair() {

  var qadiv = xGetElementById("faq");

  if (!qadiv) {

    qadiv = document.createElement("div");

    qadiv.id = "faq";

    xAddClass(qadiv,"floatLeftBox");

    var tocdiv = xGetElementById("toc"); if (!tocdiv) return;

    tocdiv.parentNode.insertBefore(qadiv,tocdiv.nextSibling);

  }

  Ajax.getContentFromURI("answer.asp?question="+this.id.replace(/qa_/,""),qadiv,updateAnswer);

  return false;

}

function updateAnswer(xdata,qadiv) {

  var dl = document.createElement("dl");

  var dt = document.createElement("dt");

  var dd = document.createElement("dd");

  Ajax.copyChildren(xdata.selectSingleNode("//Question"),dt);

  Ajax.copyChildren(xdata.selectSingleNode("//Answer"),dd);

  dl.appendChild(dt);

  dl.appendChild(dd);

  qadiv.appendChild(dl);

}