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

function ChangeLocation(s) {
//	setTimeout('RealChangeLocation(' + s + ')',100);
//	document.getElementById('menu').style.display = "none";
	document.location = s;
}
function RealChangeLocation(s) {
	document.location = s;
}

// Node object
function Node(id, pid, name, url, title, target, icon, iconOpen, open, newWindow, selected, indent_class, show) {
	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.newWindow = newWindow;
	this.selected = selected;
	this.indent_class = indent_class;
	this.show = show;
	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		: _dtree_url+'empty.gif',
		folder		: _dtree_url+'point.gif',
		folderOpen	: _dtree_url+'point.gif',
		node		: _dtree_url+'point.gif',
		empty		: _dtree_url+'empty.gif',
		line		: _dtree_url+'line.gif',
		join		: _dtree_url+'join.gif',
		joinBottom	: _dtree_url+'joinbottom.gif',
		plus		: _dtree_url+'plus.gif',
		plusBottom	: _dtree_url+'plusbottom.gif',
		minus		: _dtree_url+'minus.gif',
		minusBottom	: _dtree_url+'minusbottom.gif',
		nlPlus		: _dtree_url+'nolines_plus.gif',
		nlMinus		: _dtree_url+'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, newWindow, selected, indent_class, show) {
	this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, icon, iconOpen, open, newWindow, selected, indent_class, show);
};

// 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>\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 = '';

	var newmenu;
	var id;
	var url;
	var onclick = '';
	var begin = '';
	var classstr;
	var cursor;
	var display = '';
	var link;

	if (node.pid!=-1) {
		if (this.root.id != node.pid) {
			for (var n=0; n<this.aIndent.length; n++)
				begin += '<img src="' + this.icon.empty + '" alt="" />';
			(node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);
			if (node._hc) {
				id = 'j' + this.obj + nodeId;
				newmenu = this.obj + '.o(' + nodeId + ');'
			}
		}

		if (!node.show) {display = 'hide'} else {display = 'show'}

		if (node.url) {
			if (node.url.match(/^http:\/\//)) {
				link = node.url
				
			} else { 
				onclick = 'ChangeLocation(\'' + node.url + '\');';
			}
		}

		if (onclick=='') {if (newmenu) {onclick = newmenu; }}

		if (!node.pid) {
			node.icon = _dtree_url+'arrow.gif';
			node.iconOpen = _dtree_url+'arrowred.gif';
			classstr = "firstlevel";
		} else {
			node.icon = _dtree_url+'point.gif';
			node.iconOpen = _dtree_url+'point_selected.gif';
			classstr = "secondlevel";
		}
		if (this.aIndent.length == 3 ) {
			classstr = "thirdlevel";
		}

		if (!node.url && !newmenu) {
			cursor = 'style="cursor: default; text-decoration: none;"';
		} else {
			cursor = 'style="cursor: pointer; cursor: hand;"';
		}

		if (node.pid == 0) {
			font_dop_selected = 'simple';
		} else {
			font_dop_selected = 'simple';
		}

		str +=  '<table border="0" cellpadding="0" cellspacing="0" class="' + node.indent_class + '_' + display +'"' + '" id="' + id +'" ><tr><td>';

		if (begin) {
			str += begin + '</td><td>';
		}
		str += '<img id="i' + this.obj + nodeId + '" src="' + node.icon + '" alt=""  onclick="'+ onclick + '" '+ cursor +  ' />';
		str += '</td><td class="' + classstr + '" width="100%">';

		str += '<span onclick="'+ onclick + '" class="menu_font_' + (node.selected ? 'selected' : 'common')+ '_' + font_dop_selected + '">';
  		str += '<span ' + cursor + '>';
		if (link) {str += '<a target="_blank" href="' + link + '">'}
		if (onclick || link) {str += '<a class="menu_link" href="#" onclick="return false;">'}
		str += node.name;
		if (onclick || link) {str += '</a>'}
		if (link) {str += '</a>'}
		str += '</span></span>';

		str += '</td></tr></table>';
	}

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

	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 + ');">';
			str += '<span id="j' + this.obj + nodeId + '">ref</span>';
			str += '</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;
	}
};