var _id = 0, _pid = 0, _lid = 0, _pLayer;
var _mLists = new Array();
var isNav4, isIE4;
var isBrouser;
document.lists = _mLists;

if (parseInt(navigator.appVersion.charAt(0)) >= 4) {
	if (navigator.appName == "Netscape") 
		isBbrouser = "Nav4";
	if (navigator.appName.indexOf("Microsoft") != -1)
		isBbrouser = "MSIE";
	if (document.getElementById&&!document.all)
		isBbrouser = "Nav6";		
}

if (parseInt(navigator.appVersion.charAt(0)) >= 4) {
	isNav4 = (navigator.appName == "Netscape") ? true : false;
	isIE4 = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;
}

function List(visible, width, height, bgColor) 
{
	this.setIndent = setIndent;
	this.addItem = addItem;
	this.addList = addList;
	this.build = build;
	this.rebuild = rebuild;
	this.setFont = _listSetFont;
	this._writeList = _writeList;
	this._showList = _showList;
	this._updateList = _updateList;
	this._updateParent = _updateParent;
	this.onexpand = null; this.postexpand = null;
	this.lists = new Array(); // sublists
	this.items = new Array(); // layers
	this.types = new Array(); // type
	this.strs = new Array();  // content
	this.x = 0;
	this.y = 0;
	this.visible = visible;
	this.id = _id;
	this.i = 18;
	this.space = true;
	this.pid = 0;
	this.fontIntro = false;
	this.fontOutro = false;
	this.width = width || 350;
	this.height = height || 22;
	this.parLayer = false;
	this.built = false;
	this.shown = false;
	this.needsUpdate = false;
	this.needsRewrite = false;
	this.parent = null;
	this.l = 0;
	if(bgColor) this.bgColor = bgColor;
	else this.bgColor = null;
	_mLists[_id++] = this;
}
function _listSetFont(i,j) 
{
	this.fontIntro = i;
	this.fontOutro = j;
}
function setIndent(indent) 
{ 
	this.i = indent; 
	if(this.i < 0) { 
		this.i = 0; this.space = false; 
	} 
}
function setClip(layer, l, r, t, b) 
{
	if( isBbrouser == "Nav4" ) {
		layer.clip.left = l; layer.clip.right = r;
		layer.clip.top = t;  layer.clip.bottom = b;
	} 
	else {
		layer.style.pixelWidth = r-l;
		layer.style.pixelHeight = b-t;
		layer.style.clip = "rect("+t+","+r+","+b+","+l+")";
	}
}
function _writeList() 
{
	self.status = "List: Writing list...";
	var layer, str, clip;
	for(var i = 0; i < this.types.length; i++) { 
		layer = this.items[i];
		if ( isBbrouser == "Nav4" ) 
			layer.visibility = "hidden";
		else 
			layer.style.visibility = "hidden";
		str = "";
		if ( isBbrouser == "Nav4" ) 
			layer.document.open();
		str += "<TABLE WIDTH="+this.width+" NOWRAP BORDER=0 CELLPADDING=0 CELLSPACING=0><TR>";
		if ( this.types[i] == "list" ) {
			str += "<TD WIDTH=15 NOWRAP VALIGN=MIDDLE><A TARGET='_self' HREF=\"javascript:expand("+this.lists[i].id+");\"><IMG BORDER=0 SRC=\"/images/true.gif\" NAME=\"_img"+this.lists[i].id+"\"></A></TD>";
			_pid++;
		} 
		else if ( this.space )
		  str += "<TD WIDTH=15 NOWRAP>&nbsp;</TD>";
		if ( this.l>0 && this.i>0 ) 
			str += "<TD WIDTH="+this.l*this.i+" NOWRAP>&nbsp;</TD>";
		str += "<TD HEIGHT="+(this.height-3)+" WIDTH="+(this.width-15-this.l*this.i)+" VALIGN=MIDDLE ALIGN=LEFT>";
		if ( this.fontIntro ) 
			str += this.fontIntro;
		str += this.strs[i];
		if ( this.fontOutro ) 
			str += this.fontOutro;
		str += "</TD></TABLE>";
		if ( isBbrouser == "Nav4" ) {
			layer.document.writeln(str);
			layer.document.close();
		} 
		else 
			layer.innerHTML = str;
		if ( this.types[i] == "list" && this.lists[i].visible )
			this.lists[i]._writeList();
	}
	this.built = true;
	this.needsRewrite = false;
	self.status = '';
}
function _showList() 
{
	var layer;
	for(var i = 0; i < this.types.length; i++) { 
		layer = this.items[i];
		setClip(layer, 0, this.width, 0, this.height-1);
		var bg = layer.oBgColor || this.bgColor;
		if ( isBbrouser == "Nav4" )
			layer.document.bgColor = bg;
		else {
			if ( (bg == null) || (bg == "null") ) 
				bg = "";
			layer.style.backgroundColor = bg;
		}	
		if ( this.types[i] == "list" && this.lists[i].visible )
			this.lists[i]._showList();
	}
	this.shown = true;
	this.needsUpdate = false;
}
function _updateList(pVis, x, y) {
	var currTop = y, layer;
	for(var i = 0; i < this.types.length; i++) { 
		layer = this.items[i];
		if(this.visible && pVis) {
			if( isBbrouser == "Nav4" ) {
				layer.visibility = "visible";
				layer.top = currTop;
				layer.left = x;
			} 
			if( isBbrouser == "MSIE" ) {
				layer.style.visibility = "visible";
				layer.style.pixelTop = currTop;
				layer.style.pixelLeft = x;
			}
			if( isBbrouser == "Nav6" ) {
				layer.style.visibility = "visible";
				layer.style.top = currTop;
				layer.style.left = x;
			}
			currTop += this.height;
		} 
		else {
			if( isBbrouser == "Nav4" ) 
				layer.visibility = "hidden";
			else 
				layer.style.visibility = "hidden";
		}
		if(this.types[i] == "list") {
			if(this.lists[i].visible) {
				if ( !this.lists[i].built || this.lists[i].needsRewrite ) 
					this.lists[i]._writeList();
				if ( !this.lists[i].shown || this.lists[i].needsUpdate ) 
					this.lists[i]._showList();
				if( isBbrouser == "Nav4" ) 
					layer.document.images[0].src = "/images/true.gif";
				else 
					eval('document.images._img'+this.lists[i].id+'.src = "/images/true.gif"');
			} 
			else {
				if( isBbrouser == "Nav4" ) 
					layer.document.images[0].src = "/images/false.gif";
				else 
					eval('document.images._img'+this.lists[i].id+'.src = "/images/false.gif"');
			}
			if ( this.lists[i].built )
				currTop = this.lists[i]._updateList(this.visible && pVis, x, currTop);
		}
	}
	return currTop;
}
function _updateParent(pid, l) 
{
	var layer;
	if(!l) l = 0;
	this.pid = pid;
	this.l = l;
	for ( var i = 0; i < this.types.length; i++ ) {
		if ( this.types[i] == "list" )
			this.lists[i]._updateParent(pid, l+1);
	}	
}
function expand(i) 
{
	_mLists[i].visible = !_mLists[i].visible;
	if ( _mLists[i].onexpand != null ) 
		_mLists[i].onexpand(_mLists[i].id);
	_mLists[_mLists[i].pid].rebuild();
	if ( _mLists[i].postexpand != null ) 
		_mLists[i].postexpand(_mLists[i].id);
}
function build(x, y) 
{
	this._updateParent(this.id);
	this._writeList();
	this._showList();
	this._updateList(true, x, y);
	this.x = x; this.y = y;
}
function rebuild() 
{ 
	this._updateList(true, this.x, this.y); 
}
function addItem(str, bgColor, layer) 
{
	var testLayer = false;

	if( isBbrouser == "Nav4" ) {
		if( !this.parLayer ) 
			testLayer = eval('document.layers.lItem'+_lid);
		else {
		  	_pLayer = this.parLayer;
		  	testLayer = eval('_pLayer.document.layers.lItem'+_lid);
		}
	}
	if( isBbrouser == "MSIE" ) {
		if( !this.parLayer ) 
			testLayer = eval('document.all.lItem'+_lid);
		else {
		  	_pLayer = this.parLayer;
		  	testLayer = eval('_pLayer.document.layers.lItem'+_lid);
		}
	}
	if( isBbrouser == "Nav6" ) {
		if( !this.parLayer ) 
			testLayer = eval('document.getElementById("lItem'+_lid+'")');
		else {
		  	_pLayer = this.parLayer;
		  	testLayer = eval('_pLayer.document.layers.lItem'+_lid);
		}
	}

	if( testLayer ) 
		layer = testLayer;
	else 
		return;

	if( bgColor ) 
		layer.oBgColor = bgColor;

	this.items[this.items.length] = layer;
	this.types[this.types.length] = "item";
	this.strs[this.strs.length] = str;
	_lid++;
}
function addList(list, str, bgColor, layer) 
{
	var testLayer = false;

	if( isBbrouser == "Nav4" ) {
		if( !this.parLayer ) 
			testLayer = eval('document.layers.lItem'+_lid);
		else {
		  	_pLayer = this.parLayer;
		  	testLayer = eval('_pLayer.document.layers.lItem'+_lid);
		}
	}		
	if( isBbrouser == "MSIE" ) {
		if( !this.parLayer ) 
			testLayer = eval('document.all.lItem'+_lid);
		else {
		  	_pLayer = this.parLayer;
		  	testLayer = eval('_pLayer.document.layers.lItem'+_lid);
		}
	}		
	if( isBbrouser == "Nav6" ) {
		if( !this.parLayer ) 
			testLayer = eval('document.getElementById("lItem'+_lid+'")');
		else {
		  	_pLayer = this.parLayer;
		  	testLayer = eval('_pLayer.document.layers.lItem'+_lid);
		}
	}	

	if( testLayer ) 
		layer = testLayer;
	else 
		return;

	if(bgColor) 
		layer.oBgColor = bgColor;
	this.lists[this.items.length] = list;
	this.items[this.items.length] = layer;
	this.types[this.types.length] = "list";
	this.strs[this.strs.length] = str;
	list.parent = this;
	_lid++;
}