var loadFunctions = new Array();
function addLoadFunction(f)  {loadFunctions[loadFunctions.length] = new Function(f);}
window.onload   = function() {for (var i=0; i<loadFunctions.length; i++){loadFunctions[i]();}} 

//Convert id into object
function id2object(el){
  if (typeof(el)=="string"){el = document.getElementById(el);}
  return el;
}
var prevId;
prevId = "";

function togglej(id) {
  for (i=1;(i<=prevId.length) && (i<=id.length);i++) {
    if (id.substring(1,i)!=prevId.substring(1,i)) {
      el = id2object("faq" + prevId.substring(1,i));
      el.style.display = "none";
    }
  }
  for (i=1;i<=id.length;i++) {
    el = id2object("faq" + id.substring(1,i));
    el.style.display = "block";
  }
  prevId = id
}

var prevEl;
function toggle(id){
  if (prevEl){prevEl.style.display = "none"}
  el = id2object("faq" + id);
  el.style.display = "block";
  prevEl = el;
}

function level(id){
  el = id2object("level" + id);
  el.style.display = "block";
  prevEl = el;
}