/*--------------------------------------------------|

| dTree 2.05 | www.destroydrop.com/javascript/tree/ |

|---------------------------------------------------|

| Copyright (c) 2002-2003 Geir Landr:o              |

|                                                   |

| This script can be used freely as long as all     |

| copyright messages are intact.                    |

|                                                   |

| Updated: 17.04.2003                               |

|--------------------------------------------------*/



/*	This is a specially modified for DAlbum version of dTree*/



var _treeAlwaysOpen=true;

if (document.getElementById && document.createElement)

{



 	var agt=navigator.userAgent.toLowerCase();



 	var is_opera6 = (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1);

 	if (!is_opera6)

 		_treeAlwaysOpen=false;

}







// Node object

function Node(id, pid, name, url, title, target, icon, iconOpen, open, dynload) {

	this.dynload = dynload;

	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 || _treeAlwaysOpen;

	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.icondir= 'images/';

	this.icon = {

		root				: 'imgfolder.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;

};



// Adds a new node to the node array

dTree.prototype.add = function(id, pid, name, url, title, target, icon, iconOpen, open, dynload) {

	this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, icon, iconOpen, open, dynload);

};



// 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() {



	//

	this.icon.root = this.icondir + this.icon.root;

	this.icon.folder	= this.icondir + this.icon.folder;

	this.icon.folderOpen	= this.icondir + this.icon.folderOpen;

	this.icon.node	= this.icondir + this.icon.node	;

	this.icon.empty	= this.icondir + this.icon.empty	;

	this.icon.line	= this.icondir + this.icon.line	;

	this.icon.join	= this.icondir + this.icon.join	;

	this.icon.joinBottom	= this.icondir + this.icon.joinBottom;

	this.icon.plus	= this.icondir + this.icon.plus	;

	this.icon.plusBottom	= this.icondir + this.icon.plusBottom;

	this.icon.minus	= this.icondir + this.icon.minus	;

	this.icon.minusBottom	= this.icondir + this.icon.minusBottom;

	this.icon.nlPlus	= this.icondir + this.icon.nlPlus;

	this.icon.nlMinus	= this.icondir + this.icon.nlMinus;





	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) {

	var str='<div class="dTreeNode">';

	str += '<table border="0" cellspacing="0" cellpadding="0"><tr><td style="white-space:nowrap;">';



	str += this.indent(node, nodeId);



	str += '</td><td style="white-space:nowrap;">';



	if (this.config.useIcons) {

		if (!node.iconOpen && node.icon && !node._hc)

			node.iconOpen = node.icon;



		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;



		str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" />';

	}	str += '</td><td style="white-space:normal;">';

	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) && !_treeAlwaysOpen)

			str += ' onclick="javascript: ' + this.obj + '.s(' + nodeId + ');"';

		str += '>';

	}

	else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id && !_treeAlwaysOpen)



		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 += '</td></tr></table></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) {			if (!_treeAlwaysOpen)

		{

				str += '<a tabindex="-1" href="';

				str +='javascript: ' + this.obj + '.o(' + nodeId + ');';

				str +='"><img style="border:0px;" 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="" />';

	}	str+='';

	return str;

};



// Checks if a node has any children and if it is the last sibling

dTree.prototype.setCS = function(node) {

	var lastId;

	if (node.dynload)

		node._hc = true;

	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);//		this.o(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 (cn.dynload && cn._io)

	{

		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;

		}



		window.location.replace(cn.url);

	}

	else

		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) {

	if (_treeAlwaysOpen)

		return;

	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;

	}

};