if (!Objects) {
	var Objects =[];
};

function Tree() {
	this._id;
	this._objectId;
	this.autoCollapse = false;
	this.lookAhead = 2;
	this.captionBgColor = "#eeeeee";
	this.linkStyle;
	this.divStyle = 'font-family: Arial, Helvetica, sans-serif; font-size: 11px;';
	this.showPseudoElement = false;
	this.useCheckboxSystem = false;
	this.checkboxSystemWalkTree = 3;
	this.checkboxSystemIfPartlyThenFull = true;
	this.checkboxSystemImgDir;
	this.checkboxSystemGuiNochange;
	this.useRadioButton = false;
	this.radioButtonName;
	this.imageDir =		'/img/tree/';
	this.imageHeight =	16;
	this.useFolderIcon = false;
	this.useLeaf = false;
	this.walkTree = true;
	this.useAutoSequence = true;
	this.draggable = false;
	this._clearingHouse = new Array;
	this._pseudoElement;
	this._currentActiveElement;
	this._elementSequence = 0;
	this._errorArray;
	this.stopWatch;
	this.notifyAfterLoad = true;
	this._constructor = function() {
		this._id = Objects.length;
		Objects[this._id] = this;
		this._objectId = "Tree_" + this._id;
		var a =[];
		a['id'] = 'pseudoElement001';
		a['caption'] = "root";
		a['url'] = "";
		a['target'] = "";
		a['isOpen'] = true;
		this._pseudoElement = this._createTreeElement(a, 0);
	}
	this.initByArray = function(arr) {
		for (var i = 0; i < arr.length; i++) {
			var e = this._createTreeElement(arr[i], 1);
			if (e == false) {
				return false;
			}
			this._pseudoElement.addChild(e);
		}
		return true;
	}
	this.getActiveElement = function() {
		if (typeof(this._currentActiveElement) != 'undefined')
			return this._currentActiveElement;
		return false;
	}
	this.setActiveElement = function(treeElement) {
		this._currentActiveElement = treeElement;
	}
	this._createTreeElement = function(arr, level) {
		if (typeof(level) == 'undefined')
			level = 1;
		var e = new TreeElement();
		var status = e.initByArray(arr, this, level);
		if (!status) {
			this._addError(e.getLastError());
			return false;
		}
		this._clearingHouse[e.id] = e;
		if (arr['children']) {
			if ((this.useCheckboxSystem && (this.checkboxSystemWalkTree >= 2))
				|| e.isOpen
				|| ((this.lookAhead + 2) > level)
				|| (this.lookAhead == -1)
				|| ((typeof(e.parent) == 'object') && (e.parent.isOpen))) {
				for (var i = 0; i < arr['children'].length; i++) {
					var newE =
						this._createTreeElement(arr['children'][i], level + 1);
					if (!newE)
						return false;
					e.addChild(newE);
				}
			} else {
				e._undoneChildren = arr['children'];
			}
		}
		return e;
	}
	this.getElement = function(elementId) {
		if (elementId == 0)
			return this._pseudoElement;
		if (typeof(this._clearingHouse[elementId]) == 'object') {
			return this._clearingHouse[elementId];
		} else {
			return false;
		}
	}
	this.removeElement = function(elementId) {
		if (typeof(this._clearingHouse[elementId]) == 'undefined')
			return false;
		var elm = this._clearingHouse[elementId];
		if ((typeof(elm.parent) == 'object')
			&& (typeof(elm.parent._children) == 'object')) {
			for (var i = 0; i < elm.parent._children.length; i++) {
				if (elm.parent._children[i].id == elementId) {
					elm.parent._children.deleteItem(i);
					break;
				}
			}
		}
		this._clearingHouse.deleteItemHash(elementId);
		for (var i = 0; i < elm._children.length; i++) {
			this._clearingHouse.deleteItemHash(elm._children[i].id);
		}
		if ((typeof(elm.parent) == 'object') && (elm.parent._isOutrendered)) {
			elm.parent.render(true, true);
		}
		return true;
	}

	this.draw = function() {
		var content = this._pseudoElement.render();
		document.writeln(content[0]);
		eval(content[1]);
	}
	this.toHtml = function() {
		return this._pseudoElement.render();
	}

	this.executeOnElement = function(id, func, params) {
		if (this._clearingHouse[id]) {
			if (this._clearingHouse[id][func]) {
				if (params) {
					switch (params.length) {
						case 1 :
							return this._clearingHouse[id][func] (params[0]);
							break;
						case 2 :
							return this._clearingHouse[id][func] (
								params[0],
								params[1]);
							break;
						case 3 :
							return this._clearingHouse[id][func] (
								params[0],
								params[1],
								params[2]);
							break;
						case 4 :
							return this._clearingHouse[id][func] (
								params[0],
								params[1],
								params[2],
								params[3]);
							break;
					}
				} else {
					return this._clearingHouse[id][func] ();
				}
			}
		}
		return;
	}

	this.getJavascriptCode = function() {
		return this._pseudoElement.getJavascriptCode('a', true);
	}
	this.elementToggleOpenClose = function(id) {
		this._clearingHouse[id].toggleOpenClose();
	}
	this.elementOpenWalkUp = function(id) {
		if (typeof(this._clearingHouse[id]) != 'undefined') {
			var elm = this._clearingHouse[id];
			elm.open(true);
			if (typeof(elm.parent) != 'undefined')
				this.elementOpenWalkUp(elm.parent.id);
		} else {
			return false;
		}
		return true;
	}

	this.elementCloseWalkUp = function(id) {
		if (typeof(this._clearingHouse[id]) != 'undefined') {
			var elm = this._clearingHouse[id];
			elm.close(true);
			if (typeof(elm.parent) != 'undefined')
				this.elementCloseWalkUp(elm.parent.id);
		} else {
			return false;
		}
		return true;
	}
	this.elementCloseWalkDown = function(id) {
		if (typeof(id) == 'undefined') {
			var elm = this._pseudoElement;
		} else if (typeof(this._clearingHouse[id]) != 'undefined') {
			var elm = this._clearingHouse[id];
			elm.close(true);
		} else {
			return false;
		}
		if (typeof(elm._children) != 'undefined') {
			for (var i = 0; i < elm._children.length; i++) {
				this.elementCloseWalkDown(elm._children[i].id);
			}
		}
		return true;
	}
	this.elementOpen = function(id) {
		if (typeof(this._clearingHouse[id]) != 'undefined') {
			this._clearingHouse[id].open();
		}
	}
	this.elementClose = function(id) {
		this._clearingHouse[id].close();
	}
	this.openPath = function(data, valueType) {
		var elm = this.getElementByCaptionPath(data);
		if (elm == false)
			return false;
		this.elementOpenWalkUp(elm.id);
		return true;
	}
	this.getElementByCaptionPath = function(data) {
		var elm = this._pseudoElement;
		for (var i = 0; i < data.length; i++) {
			var newElm = null;
			for (var j = 0; j < elm._children.length; j++) {
				if (elm._children[j].caption == data[i]) {
					newElm = elm._children[j];
					elm = newElm;
					if (typeof(elm._undoneChildren) == 'object') {
						for (var k = 0; k < elm._undoneChildren.length; k++) {
							var newE =
								this._createTreeElement(
									elm._undoneChildren[k],
									elm._level + 1);
							elm.addChild(newE);
						}
						elm._undoneChildren = false;
					}
					break;
				}
			}
			if (newElm == null)
				return false;
		}
		return newElm;
	}

	this.elementCheckboxEvent = function(id, value) {
		this._clearingHouse[id].checkboxEvent(value);
	}
	this.debugDumpTree = function(elm, indent) {
		if (typeof(elm) == 'undefined') {
			elm = this._pseudoElement;
			indent = '';
			var firstCall = true;
		}
		var ret = '';
		if (typeof(elm._children) == 'object') {
			for (var i = 0; i < elm._children.length; i++) {
				ret += indent
					+ i
					+ ': '
					+ elm._children[i].id
					+ ': '
					+ elm._children[i].caption
					+ "\n";
				ret += this.debugDumpTree(elm._children[i], indent + '  ');
			}
		}
		if (firstCall) {
			alert(ret);
		} else {
			return ret;
		}
	}
	this._addError = function(str) {
		if (typeof(this._errorArray) == 'undefined') {
			this._errorArray = new Array(str);
		} else {
			this._errorArray[this._errorArray.length] = str;
		}
	}
	this.getLastError = function() {
		if (typeof(this._errorArray) != 'undefined') {
			if (this._errorArray.length > 0) {
				return this._errorArray[this._errorArray.length - 1];
			}
		}
		return false;
	}

	this.old_drawInto = function(id) {
		var content = this._pseudoElement.render();
		var e = document.getElementById(id);
		if (e) {
			e.innerHTML = content[0];
			if (''!= content[1])
				eval(content[1]);
		}
	}
	
	this._imgPreload = function() {
		var id = this.globalId;
		var e  = document.getElementById(id);
		var ii = 0;
		var outTemp = new Array();
		outTemp[ii++] = '<img src="' + this.imageDir + 'line1.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'line2.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'line3.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'minus1.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'minus2.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'minus3.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'plus1.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'plus2.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'plus3.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'line3.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'empty.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'leaf.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'folderClosed.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'folderOpen.gif" border="0" style="display:none;">';
	
		if (e) e.innerHTML = outTemp.join('');
	}
	
	this._afterImgPreload = function() {
		var id = this.globalId;
		var content = this._pseudoElement.render();
		var e = document.getElementById(id);
		if (e) {
			e.innerHTML = content[0];
			if (''!= content[1]) {
				eval(content[1]);
			}
		}
		
		if (this.notifyAfterLoad)
			doNotifyAfterLoad();
	}

	this.drawInto = function(id) {
		this.globalId = id;
		setTimeout('Objects['+this._id + ']._imgPreload()', 0);
		setTimeout('Objects['+this._id + ']._afterImgPreload()', 500);
	}
	this._constructor();
}

function doNotifyAfterLoad() {
	// this function needs to be override in the local pages
}