/*
aqtree3clickable.js

Converts an unordered list to an explorer-style tree, with clickable
icons

To make this work, simply add one line to your HTML:
<script type="text/javascript" src="aqtree3clickable.js"></script>

and then make the top UL of your nested unordered list of class
"aqtree3clickable".

That's it. No registration function, nothing.

http://www.kryogenix.org/code/browser/aqlists/

Stuart Langridge, November 2002
sil@kryogenix.org

Inspired by Aaron's labels.js (http://youngpup.net/demos/labels/) and Dave Lindquist's menuDropDown.js (http://www.gazingus.org/dhtml/?id=109)

*/

addEvent(window, "load", makeTreesC);

function makeTreesC() {
    // We don't actually need createElement, but we do
    // need good DOM support, so this is a good check.
    if (!document.createElement) return;
    
    uls = document.getElementsByTagName("ul");
    for (uli=0;uli<uls.length;uli++) {
        ul = uls[uli];
        if (ul.nodeName == "UL" && ul.className == "aqtree3clickable") {
            processULELC(ul);
        }
    }
}

function processULELC(ul) {
    if (!ul.childNodes || ul.childNodes.length == 0) return;
    // Iterate LIs
    for (var itemi=0;itemi<ul.childNodes.length;itemi++) {
        var item = ul.childNodes[itemi];
        if (item.nodeName == "LI") {
            // Iterate things in this LI
            var a;
            var subul;
	    subul = "";
            for (var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
                var sitem = item.childNodes[sitemi];
                switch (sitem.nodeName) {
                    case "A": a = sitem; break;
                    case "UL": subul = sitem; 
                               processULELC(subul);
                               break;
                }
            }
            if (subul) {
                associateELC(a,subul);
            } else {
                a.parentNode.className = "aq3bullet";
            }
        }
    }
}

function associateELC(a,ul) {
    if (a.parentNode.className.indexOf('aq3open') == -1)
      a.parentNode.className = 'aq3closed';
    a.onclick = function () {
        this.parentNode.className = (this.parentNode.className=='aq3open') ? "aq3closed" : "aq3open";
        return false;
    }
}

/*              Utility functions                    */

function addEvent(obj, evType, fn){
  /* adds an eventListener for browsers which support it
     Written by Scott Andrew: nice one, Scott */
  if (obj.addEventListener){
    obj.addEventListener(evType, fn, false);
    return true;
  } else if (obj.attachEvent){
	var r = obj.attachEvent("on"+evType, fn);
    return r;
  } else {
	return false;
  }
}

/*		Added to persist location in menu		*/

function showCurrentPage()
{
	var objLocation = this.location
	//alert(objLocation.href);
	var arrLi = document.getElementsByTagName("LI");
	
	for (var i = 0; i < arrLi.length; i++)
	{
		// Loop through LIs
		if (!arrLi[i].childNodes || arrLi[i].childNodes.length == 0) break;
		for (var j = 0; j < arrLi[i].childNodes.length; j++)
		{
			// Loop through childNodes of each LI
			if (arrLi[i].childNodes[j].nodeName == "A") 
			{
				var objA = arrLi[i].childNodes[j]
				//alert(objA.href);
				if (objA.href == objLocation.href)
				{
					if (objA.parentNode.parentNode.className != "aqtree3")
					{
						objA.style.color = "#039ED6";
						objA.style.fontWeight = "bold";
						objA.parentNode.parentNode.style.display = "block";
						// Quick hack to allow 2nd level opening
						if (objA.parentNode.parentNode.parentNode.parentNode.style.display != "block")
						{
							objA.parentNode.parentNode.parentNode.parentNode.style.display = "block";
						}
					}
				}
			}
		}
	}
}