dTree/dtree.js/2.05W1

About
This version allows images to be in a different default folder without having to specify them individually by setting config.fpImgBase. There is further tidying that could be done.

Code
/*--| HISTORY: 2011-01-12 added config.fpImgBase, Icon - to allow icons to be kept in different folder by default // 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, fpImgBase	: 'img/' }	this.icon = { root		: 'base.gif', folder		: 'folder.gif', folderOpen	: 'folderopen.gif', node		: 'page.gif', empty		: 'empty.gif', line		: 'line.gif', join		: 'join.gif', joinBottom	: 'joinbottom.gif', plus		: 'plus.gif', plusBottom	: 'plusbottom.gif', minus		: 'minus.gif', minusBottom	: 'minusbottom.gif', nlPlus		: 'nolines_plus.gif', nlMinus		: 'nolines_minus.gif' };	this.obj = objName; this.aNodes = []; this.aIndent = []; this.root = new Node(-1); this.selectedNode = null; this.selectedFound = false; this.completed = false; this.Icon = function(type) { return this.config.fpImgBase + this.icon[type]; } }; // 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 = ' \n'; if (document.getElementById) { if (this.config.useCookies) this.selectedNode = this.getSelected; str += this.addNode(this.root); } else str += 'Browser not supported.'; str += ' '; 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 = ' ' + 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 += ''; }	if (node.url) { str += ''; }	else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id) str += ''; str += node.name; if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += ''; str += ' '; if (node._hc) { str += ''; str += this.addNode(node); str += ' '; }	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'; (node._ls) ? this.aIndent.push(0) : this.aIndent.push(1); if (node._hc) { str += ''; } else str += ''; }	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; } };
 * 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                              |
 * copyright messages are intact.                   |
 * Updated: 17.04.2003                              |
 * Updated: 17.04.2003                              |