// Node object
function Node(id, pid, name, url, title, target, control, iconOpen, open) {
	this.id = id;
	this.pid = pid;
	this.name = name;
	this.url = url;
	this.title = title;
	this.target = target;
	this.control = control;
	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, RootID, Parrent) {
	this.config = {
		target					: null,
		useControls				: true,
		folderLinks				: true,
		useSelection			: true,
		useCookies				: false,
		useLines				: false,
		useHovers				: false,
		useIcons				: false,
		useDirfertFirstStyle	: false,
		useStatusText			: true,
		closeSameLevel			: true,
		disabled				: false,
		inOrder					: false,
		rootNameDisplay			: false
	}
	this.icon = {
		space					: 'img/space.gif',
		empty					: 'img/empty.gif',
		emptyHover				: 'img/empty_hover.gif',
		nlPlus					: 'img/nolines_plus.gif',
		nlMinus					: 'img/nolines_minus.gif',
		nlPlusHover				: 'img/nolines_plus_hover.gif',
		nlMinusHover			: 'img/nolines_minus_hover.gif'
	};

	this.obj = objName;
	this.aNodes = [];
	this.aIndent = [];
	this.parrent = Parrent;
	this.root = new Node(RootID);
	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, control, iconOpen, open) {
	this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, control, 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 = '<table cellpadding="0" cellspacing="0" border="0" class="dTree"><tr><td>\n';
	if (document.getElementById) {
		if (this.config.useCookies) this.selectedNode = this.getSelected();
		str += this.addNode(this.root);
	} else str += 'Browser not supported. to view menu';
	str += '</td></tr></table>';
	if (!this.selectedFound) this.selectedNode = null;
	this.completed = true;
	//alert (str);
	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 = '';
	var tableclass = "dTreeNode";
	if (this.config.useDirfertFirstStyle) {
		if (node.pid == this.parrent) {
			tableclass = "dTreeNodeF";
		}
	}

	if (this.root.id != node.pid) {
		str += '<table cellpadding="0" cellspacing="0" border="0" class="'+ tableclass +'"><tr><td valign="top" style="white-space:nowrap;">'+this.controls(node)+'</td><td valign="top">' + this.indent(node, nodeId)+"</td>";
		str += '<td class="' + ((this.config.useSelection) ? ((node._is ? 'dTreeNodeLinkTDSel' : 'dTreeNodeLinkTD')) : 'dTreeNodeLinkTD') + '">';
		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.useHovers) str += ' onmouseover="javascript: ' + this.obj + '.ov(' + nodeId + ');" onmouseout="javascript: ' + this.obj + '.ou(' + nodeId + ');" ';
			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 id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '" href="javascript: ' + this.obj + '.o(' + nodeId + ');"';
			if (node.title) str += ' title="' + node.title + '"';
			if (node.target) str += ' target="' + node.target + '"';
			if (this.config.useHovers) str += ' onmouseover="javascript: ' + this.obj + '.ov(' + nodeId + ');" onmouseout="javascript: ' + this.obj + '.ou(' + nodeId + ');" ';
			str += '>';
				//str += '<a id="s' + this.obj + nodeId + '" 
				//if (node.title) str += ' title="' + node.title + '"';
				//if (this.config.useHovers) str += ' onmouseover="javascript: ' + this.obj + '.ov(' + nodeId + ');" onmouseout="javascript: ' + this.obj + '.ou(' + nodeId + ');" ';
				//str += 'class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '">';
			}
		}
		str += node.name;
		if (node.url || ((!this.config.folderLinks || !node.url) && node._hc) && this.root.id != node.pid) str += '</a>';
		if (node.id == "8") {
			str += '<span id="mm_new">&nbsp;</span>';
		}

		str += "</td></tr></table>\n";
	} else {
		if ( this.config.rootNameDisplay ) {
			str += '<table cellpadding="0" cellspacing="0" border="0" class="'+ tableclass +'"><tr><td valign="top" style="white-space:nowrap;">'+this.controls(node)+'</td><td valign="top">' + this.indent(node, nodeId) + "</td>";
			str += '<td class="title_white" style="padding:0px;padding-bottom: 7px;">';
			str += node.name;
			str += "</td></tr></table>\n";
		}
	}
	if (node._hc) {
		str += '<table cellpadding="0" cellspacing="0" border="0" id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? '' : 'none') + ';">'+"\n"+'<tr>'+"\n";
		if (this.root.id != node.pid) {
			str += '<td>'+"\n";
		} else {
			str += '<td style="padding-left:0px;">'+"\n";
		}
		str += this.addNode(node);
		str += '</td>'+"\n"+'</tr>'+"\n"+'</table>';

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

dTree.prototype.controls = function (node) {
	var str = '';
	if (!this.config.useControls ) return str;
	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 += '<td class="dTreeEmptyImage"><img src="' + this.icon.space + '" alt="" /></td>';
		}
		(node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);
		if (node._hc) {
			str += '<td class="dTreeAction">';
			if (this.config.disabled == false)  {
				str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');">';
			}
			str += '<img id="j' + this.obj + nodeId + '" src="';
			str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus;
			str += '"';
			if (this.config.useHovers) str += ' onmouseover="javascript: ' + this.obj + '.ov(' + nodeId + ');" onmouseout="javascript: ' + this.obj + '.ou(' + nodeId + ');" ';
			str += 'alt="" />';
			if (this.config.disabled == false)  {
				str += '</a>';
			}
			str += '</td>';
		} else str += '<td class="dTreeAction"><img src="' + this.icon.empty + '" id="e' + this.obj + nodeId + '" alt="" /></td>';
	}
	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";
			eOld.parentNode.parentNode.className = "";
		}
		if (document.getElementById("e" + this.obj + id)) {
			document.getElementById("e" + this.obj + id).src = this.icon.emptyHover;
		} else {
			document.getElementById('j' + this.obj + id).src = (this.aNodes[id]._io) ? this.icon.nlMinusHover : this.icon.nlPlusHover;
		}
		eNew = document.getElementById("s" + this.obj + id);
		eNew.className = "nodeSel";
		eNew.parentNode.parentNode.className = "dTreeNodeLinkTDSel";
		this.selectedNode = id;
		if (this.config.useCookies) this.setCookie('cs' + this.obj, cn.id);
	}
};

dTree.prototype.ov = function(id) {
	if (document.getElementById("e" + this.obj + id)) {
		document.getElementById("e" + this.obj + id).src = this.icon.emptyHover;
	} else {
	document.getElementById('j' + this.obj + id).src = (this.aNodes[id]._io) ? this.icon.nlMinusHover : this.icon.nlPlusHover;
	}
};

dTree.prototype.ou = function(id) {
	 if (document.getElementById("e" + this.obj + id)) {
		document.getElementById("e" + this.obj + id).src = this.icon.empty;
	} else {
		document.getElementById('j' + this.obj + id).src = (this.aNodes[id]._io) ? this.icon.nlMinus : this.icon.nlPlus;
	}
};


// 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]);
		}
	}
}

// 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);
	eJoin.src = (status) ? this.icon.nlMinus : this.icon.nlPlus;
	eDiv.style.display = (status) ? '': 'none';
	var Hide   = document.getElementById('s' + this.obj + id).getAttribute("hide");
};


// 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;
	}
};