addEvent(window,"load",convertTrees);

function addEvent(o,e,f)
{
	if (o.addEventListener)
	{
		o.addEventListener(e,f,true);
		return true;
	}
	else if (o.attachEvent)
	{
		return o.attachEvent("on"+e,f);
	}
	else
	{
		return false;
	}
}

function setDefault(name,val)
{
	if (typeof(window[name])=="undefined" || window[name]==null)
	{
		window[name]=val;
	}
}

function expandTree(treeId)
{
	var ul = document.getElementById(treeId);
	if (ul == null)
	{
		return false;
	}
	expandCollapseList(ul,nodeOpenClass);
}

function collapseTree(treeId)
{
	var ul = document.getElementById(treeId);
	if (ul == null)
	{
		return false;
	}
	expandCollapseList(ul,nodeClosedClass);
}

function expandToItem(treeId,itemId)
{
	var ul = document.getElementById(treeId);
	if (ul == null)
	{
		return false;
	}
	var ret = expandCollapseList(ul,nodeOpenClass,itemId);
	if (ret)
	{
		var o = document.getElementById(itemId);
		if (o.scrollIntoView)
		{
			o.scrollIntoView(false);
		}
	}
}

function expandCollapseList(ul,cName,itemId)
{
	if (!ul.childNodes || ul.childNodes.length==0)
	{
		return false;
	}

	for (var itemi=0;itemi<ul.childNodes.length;itemi++)
	{
		var item = ul.childNodes[itemi];
		if (itemId!=null && item.id==itemId)
		{
			return true;
		}
		if (item.nodeName == "LI")
		{
			var subLists = false;
			for (var sitemi=0;sitemi<item.childNodes.length;sitemi++)
			{
				var sitem = item.childNodes[sitemi];
				if (sitem.nodeName=="UL")
				{
					subLists = true;
					var ret = expandCollapseList(sitem,cName,itemId);
					if (itemId!=null && ret)
					{
						item.className=cName;
						return true;
					}
				}
			}
			if (subLists && itemId==null)
			{
				item.className = cName;
			}
		}
	}
}

function convertTrees()
{
	setDefault("treeClass","mktree");
	setDefault("nodeClosedClass","liClosed");
	setDefault("nodeOpenClass","liOpen");
	setDefault("nodeBulletClass","liBullet");
	setDefault("nodeLinkClass","bullet");
	setDefault("preProcessTrees",true);
	if (preProcessTrees)
	{
		if (!document.createElement)
		{
			return;
		}
		uls = document.getElementsByTagName("ul");
		for (var uli=0;uli<uls.length;uli++)
		{
			var ul=uls[uli];
			if (ul.nodeName=="UL" && ul.className==treeClass)
			{
				processList(ul);
			}
		}
	}
}

function processList(ul)
{
	if (!ul.childNodes || ul.childNodes.length==0)
	{
		return;
	}
	for (var itemi=0;itemi<ul.childNodes.length;itemi++)
	{
		var item = ul.childNodes[itemi];
		if (item.nodeName == "LI")
		{
			var subLists = false;
			for (var sitemi=0;sitemi<item.childNodes.length;sitemi++)
			{
				var sitem = item.childNodes[sitemi];
				if (sitem.nodeName=="UL")
				{
					subLists = true;
					processList(sitem);
				}
			}
			var s= document.createElement("SPAN");
			var t= '\u00A0';
			s.className = nodeLinkClass;
			if (subLists)
			{
				if (item.className==null || item.className=="")
				{
					item.className = nodeClosedClass;
				}
				if (item.firstChild.nodeName=="#text")
				{
					t = t+item.firstChild.nodeValue;
					item.removeChild(item.firstChild);
				}
				s.onclick = function ()
				{
					this.parentNode.className = (this.parentNode.className==nodeOpenClass) ? nodeClosedClass : nodeOpenClass;
					return false;
				}
			}
			else
			{
				item.className = nodeBulletClass;
				s.onclick = function ()
				{
					return false;
				}
			}
			s.appendChild(document.createTextNode(t));
			item.insertBefore(s,item.firstChild);
		}
	}
}