/*
dTree 2.05 | www.destroydrop.com/javascript/tree/
Copyright (c) 2002-2003 Geir Landrö
This script can be used freely as long as all
copyright messages are intact.
Updated: 17.04.2003
*/

// 	[ Node object ]
	function Node(id, pid, name, url, title, target, icon, iconOpen, open)
		{
		this.id = id;
		this.pid = pid;
		this.name = name;
		this.url = url;
		this.title = title;
		this.target = target;
		this.icon = icon;
		this.iconOpen = iconOpen;
		this._io = open || false;
		this._is = false;
		this._ls = false;
		this._hc = false;
		this._ai = 0;
		this._p;
		};



//	[ Tree object ]
	function dTree(objName)
		{
		this.config = {
			target: null,
			folderLinks: true,
			useSelection: false,
			useCookies: true,
			useLines: false,
			useIcons: false,
			useStatusText: false,
			closeSameLevel	: false,
			inOrder: false
			}

		this.icon = {
			root: 'img/base.gif',
			folder: 'img/folder.gif',
			folderOpen: 'img/folderopen.gif',
			node: 'img/page.gif',
//			empty: 'img/empty.gif',
			empty: '/Images/Formatting/Clear_12x16.gif',
			line: 'img/line.gif',
			join: 'img/join.gif',
			joinBottom: 'img/joinbottom.gif',
			plus: 'img/plus.gif',
			plusBottom: 'img/plusbottom.gif',
			minus: 'img/minus.gif',
			minusBottom: 'img/minusbottom.gif',
//			nlPlus: 'img/nolines_plus.gif',
			nlPlus: '/Images/Icons/Collapse_12x16.gif',
//			nlMinus: 'img/nolines_minus.gif'
			nlMinus: '/Images/Icons/Expand_12x16.gif'
			};

		this.obj = objName;
		this.aNodes = [];
		this.aIndent = [];
		this.root = new Node(-1);
		this.selectedNode = null;
		this.selectedFound = false;
		this.completed = false;
		};



//	Adds a new node to the node array
	dTree.prototype.add = function(id, pid, name, url, title, target, icon, iconOpen, open)
		{this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, icon, iconOpen, open);};

//	Open/close all nodes
	dTree.prototype.openAll = function()
		{this.oAll(true);};

	dTree.prototype.closeAll = function()
		{this.oAll(false);};

//	Outputs the tree to the page
	dTree.prototype.toString = function()
		{
		var str = '<div class="dtree">\n';
		if (document.getElementById)
			{
			if (this.config.useCookies) this.selectedNode = this.getSelected();
				str += this.addNode(this.root);
			}
		else
			str += 'Browser not supported.';
		str += '</div>';

		if (!this.selectedFound) this.selectedNode = null;
			this.completed = true;

		return str;
		};


//	Creates the tree structure
	dTree.prototype.addNode = function(pNode)
		{
		var str = '';
		var n=0;
		if (this.config.inOrder) n = pNode._ai;
		for (n; n<this.aNodes.length; n++)
			{
			if (this.aNodes[n].pid == pNode.id)
				{
				var cn = this.aNodes[n];
				cn._p = pNode;
				cn._ai = n;
				this.setCS(cn);
				if (!cn.target && this.config.target) cn.target = this.config.target;
				if (cn._hc && !cn._io && this.config.useCookies) cn._io = this.isOpen(cn.id);
				if (!this.config.folderLinks && cn._hc) cn.url = null;
				if (this.config.useSelection && cn.id == this.selectedNode && !this.selectedFound)
					{
					cn._is = true;
					this.selectedNode = n;
					this.selectedFound = true;
					}
				str += this.node(cn, n);
				if (cn._ls) break;
				}
			}

		return str;
		};



//	Creates the node icon, url and text
	dTree.prototype.node = function(node, nodeId)
		{
//		alert(this.indent(node, nodeId));
		var str = '<div class="dTreeNode"'
		if (this.root.id == node.pid)	// This hack added to set top level font to bold.
			{
//			alert(node.pid);
			str += 'style="font-weight: bold; padding-top: 5px;"'
			}
		str += '>' + this.indent(node, nodeId);
		if (this.config.useIcons)
			{
			if (!node.icon) node.icon = (this.root.id == node.pid) ? this.icon.root : ((node._hc) ? this.icon.folder : this.icon.node);
			if (!node.iconOpen) node.iconOpen = (node._hc) ? this.icon.folderOpen : this.icon.node;
			if (this.root.id == node.pid)
				{
				node.icon = this.icon.root;
				node.iconOpen = this.icon.root;
				}
			str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" />';
			}

		if (node.url)
			{
			str += '<a id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '" href="' + node.url + '"';
			if (node.title) str += ' title="' + node.title + '"';
			if (node.target) str += ' target="' + node.target + '"';
			if (this.config.useStatusText) str += ' onmouseover="window.status=\'' + node.name + '\';return true;" onmouseout="window.status=\'\';return true;" ';
			if (this.config.useSelection && ((node._hc && this.config.folderLinks) || !node._hc))
				str += ' onclick="javascript: ' + this.obj + '.s(' + nodeId + ');"';
			str += '>';
			}
		else
			if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id)
				str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');" class="node">';

		str += node.name;

		if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';
			str += '</div>';

		if (node._hc)
			{
			str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';">';
			str += this.addNode(node);
			str += '</div>';
			}

/*
//	added hack to try and insert padding-bottom to lowest child item
		if(node._ls)
			{
			str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';">';
			str += 'aaa' + this.addNode(node);
			str += '</div>';
			}
*/

		this.aIndent.pop();
		return str;
		};



//	Adds the empty and line icons
	dTree.prototype.indent = function(node, nodeId)
		{
		var str = '';
		if (this.root.id != node.pid)
			{
			for (var n=0; n<this.aIndent.length; n++)
				str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line : this.icon.empty ) + '" alt="" />';
			(node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);
			if (node._hc)
				{
				str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');"><img id="j' + this.obj + nodeId + '" src="';
				if (!this.config.useLines)
					str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus;
				else
					str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom : this.icon.minus) : ((node._ls && this.config.useLines) ? this.icon.plusBottom : this.icon.plus ) );

				str += '" alt="" /></a>';
				}
			else
				{
				str += '<img src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom : this.icon.join ) : this.icon.empty) + '" alt="" />';
				}
			}
		else
			{
//			alert(node.pid);
			}
		return str;
		};



//	Checks if a node has any children and if it is the last sibling
	dTree.prototype.setCS = function(node)
		{
		var lastId;
		for (var n=0; n<this.aNodes.length; n++)
			{
			if (this.aNodes[n].pid == node.id) node._hc = true;
			if (this.aNodes[n].pid == node.pid) lastId = this.aNodes[n].id;
			}
		if (lastId==node.id)
			{
			node._ls = true;
//			alert(node.id);
			}
		};


//	Returns the selected node
	dTree.prototype.getSelected = function()
		{
		var sn = this.getCookie('cs' + this.obj);
		return (sn) ? sn : null;
		};


//	Highlights the selected node
	dTree.prototype.s = function(id)
		{
		if (!this.config.useSelection) return;
		var cn = this.aNodes[id];
		if (cn._hc && !this.config.folderLinks) return;
		if (this.selectedNode != id)
			{
			if (this.selectedNode || this.selectedNode==0)
				{
				eOld = document.getElementById("s" + this.obj + this.selectedNode);
				eOld.className = "node";
				}
			eNew = document.getElementById("s" + this.obj + id);
			eNew.className = "nodeSel";
			this.selectedNode = id;
			if (this.config.useCookies) this.setCookie('cs' + this.obj, cn.id);
			}
		};


//	Toggle Open or close
	dTree.prototype.o = function(id)
		{
		var cn = this.aNodes[id];
		this.nodeStatus(!cn._io, id, cn._ls);
		cn._io = !cn._io;
		if (this.config.closeSameLevel) this.closeLevel(cn);
		if (this.config.useCookies) this.updateCookie();
		};


//	Open or close all nodes
	dTree.prototype.oAll = function(status)
		{
		for (var n=0; n<this.aNodes.length; n++)
			{
			if (this.aNodes[n]._hc && this.aNodes[n].pid != this.root.id)
				{
				this.nodeStatus(status, n, this.aNodes[n]._ls)
				this.aNodes[n]._io = status;
				}
			}
		if (this.config.useCookies) this.updateCookie();
		};


//	Opens the tree to a specific node
	dTree.prototype.openTo = function(nId, bSelect, bFirst)
		{
		if (!bFirst)
			{
			for (var n=0; n<this.aNodes.length; n++)
				{
				if (this.aNodes[n].id == nId)
					{
					nId=n;
					break;
					}
				}
			}
		var cn=this.aNodes[nId];
		if (cn.pid==this.root.id || !cn._p) return;
		cn._io = true;
		cn._is = bSelect;
		if (this.completed && cn._hc) this.nodeStatus(true, cn._ai, cn._ls);
		if (this.completed && bSelect) this.s(cn._ai);
		else if (bSelect) this._sn=cn._ai;
		this.openTo(cn._p._ai, false, true);
		};


//	Closes all nodes on the same level as certain node
	dTree.prototype.closeLevel = function(node)
		{
		for (var n=0; n<this.aNodes.length; n++)
			{
			if (this.aNodes[n].pid == node.pid && this.aNodes[n].id != node.id && this.aNodes[n]._hc)
				{
				this.nodeStatus(false, n, this.aNodes[n]._ls);
				this.aNodes[n]._io = false;
				this.closeAllChildren(this.aNodes[n]);
				}
			}
		}


//	Closes all children of a node
	dTree.prototype.closeAllChildren = function(node)
		{
		for (var n=0; n<this.aNodes.length; n++)
			{
			if (this.aNodes[n].pid == node.id && this.aNodes[n]._hc)
				{
				if (this.aNodes[n]._io) this.nodeStatus(false, n, this.aNodes[n]._ls);
				this.aNodes[n]._io = false;
				this.closeAllChildren(this.aNodes[n]);
				}
			}
		}


//	Change the status of a node(open or closed)
	dTree.prototype.nodeStatus = function(status, id, bottom)
		{
		eDiv = document.getElementById('d' + this.obj + id);
		eJoin = document.getElementById('j' + this.obj + id);
		if (this.config.useIcons)
			{
			eIcon = document.getElementById('i' + this.obj + id);
			eIcon.src = (status) ? this.aNodes[id].iconOpen : this.aNodes[id].icon;
			}
		eJoin.src = (this.config.useLines)?((status)?((bottom)?this.icon.minusBottom:this.icon.minus):((bottom)?this.icon.plusBottom:this.icon.plus)):((status)?this.icon.nlMinus:this.icon.nlPlus);
		eDiv.style.display = (status) ? 'block': 'none';
		};


//	[Cookie] Clears a cookie
	dTree.prototype.clearCookie = function()
		{
		var now = new Date();
		var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24);
		this.setCookie('co'+this.obj, 'cookieValue', yesterday);
		this.setCookie('cs'+this.obj, 'cookieValue', yesterday);
		};


//	[Cookie] Sets value in a cookie
	dTree.prototype.setCookie = function(cookieName, cookieValue, expires, path, domain, secure)
		{
		document.cookie = escape(cookieName) + '=' + escape(cookieValue) + (expires ? '; expires=' + expires.toGMTString() : '') + (path ? '; path=' + path : '') + (domain ? '; domain=' + domain : '') + (secure ? '; secure' : '');
		};


//	[Cookie] Gets a value from a cookie
	dTree.prototype.getCookie = function(cookieName)
		{
		var cookieValue = '';
		var posName = document.cookie.indexOf(escape(cookieName) + '=');
		if (posName != -1)
			{
			var posValue = posName + (escape(cookieName) + '=').length;
			var endPos = document.cookie.indexOf(';', posValue);
			if (endPos != -1)
				cookieValue = unescape(document.cookie.substring(posValue, endPos));
			else
				cookieValue = unescape(document.cookie.substring(posValue));
			}
		return (cookieValue);
		};


//	[Cookie] Returns ids of open nodes as a string
	dTree.prototype.updateCookie = function()
		{
		var str = '';
		for (var n=0; n<this.aNodes.length; n++)
			{
			if (this.aNodes[n]._io && this.aNodes[n].pid != this.root.id)
				{
				if (str) str += '.';
				str += this.aNodes[n].id;
				}
			}
		this.setCookie('co' + this.obj, str);
		};


//	[Cookie] Checks if a node id is in a cookie
	dTree.prototype.isOpen = function(id)
		{
		var aOpen = this.getCookie('co' + this.obj).split('.');
		for (var n=0; n<aOpen.length; n++)
		if (aOpen[n] == id) return true;
		return false;
		};


//	If Push and pop is not implemented by the browser
	if (!Array.prototype.push)
		{
		Array.prototype.push = function array_push()
			{
			for(var i=0;i<arguments.length;i++)
			this[this.length]=arguments[i];
			return this.length;
			}
		};


	if (!Array.prototype.pop)
		{
		Array.prototype.pop = function array_pop()
			{
			lastElement = this[this.length-1];
			this.length = Math.max(this.length-1,0);
			return lastElement;
			}
		};


	function ItemClick(url, value)
		{
//		alert('ItemClick: ' + url + ', ' + value);
		d.openTo(value, true);
		location.href = url;
//		location.href = url + '/Products/?c=' + value;
//		window.open('/Products/?c=' + value);
//		return true;
		}