// JavaScript Document

		// 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		: true,
		
				useCookies			: true,
		
				useLines				: true,
		
				useIcons				: true,
		
				useStatusText		: false,
		
				closeSameLevel	: false,
		
				inOrder					: false
		
			}
		
			this.icon = {
		
				root				: 'treefile/base.gif',
		
				folder			: 'treefile/folder.gif',
		
				folderOpen	: 'treefile/folderopen.gif',
		
				node				: 'treefile/page.gif',
		
				empty				: 'treefile/empty.gif',
		
				line				: 'treefile/line.gif',
		
				join				: 'treefile/join.gif',
		
				joinBottom	: 'treefile/joinbottom.gif',
		
				plus				: 'treefile/plus.gif',
		
				plusBottom	: 'treefile/plusbottom.gif',
		
				minus				: 'treefile/minus.gif',
		
				minusBottom	: 'treefile/minusbottom.gif',
		
				nlPlus			: 'treefile/nolines_plus.gif',
		
				nlMinus			: 'treefile/nolines_minus.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">';
		
			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) {
		
			var str = '<div class="dTreeNode">' + 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>';
		
			}
		
			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="" />';
		
			}
		
			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;
		
		};
		
		
		
		// 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;
		
			}
		
		};