/**********************************************************************************   
FoldoutMenu 
*   Copyright (C) 2001 Thomas Brattli
*   This script was released at DHTMLCentral.com
*   Visit for more great scripts!
*   This may be used and changed freely as long as this msg is intact!
*   We will also appreciate any links you could give us.
*
*   Made by Thomas Brattli
*
*   Script date: 09/04/2001 (keep this date to check versions) 
*********************************************************************************/
function lib_bwcheck(){ //Browsercheck (needed)
	this.ver=navigator.appVersion
	this.agent=navigator.userAgent
	this.dom=document.getElementById?1:0
	this.opera5=(navigator.userAgent.indexOf("Opera")>-1 && document.getElementById)?1:0
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6
	this.mac=this.agent.indexOf("Mac")>-1
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
	return this
}
var bw=lib_bwcheck()

/*** variables you can configure ***/

FoldNumber = 7				//How many toplinks do you have?
var stayFolded = false			//Stay open when you click a new toplink?
foldImg = 1						//Do you want images (if not set to 0 and remove the images from the body)?
mainOffsetY = 5					//Vertical space adjustment between the main items, in pixels.

//This is the default image.
//Remember to change the actual images in the page as well, but remember to keep the name of the image.
var unImg=new Image();
unImg.src='img/knop.gif'

var exImg=new Image();					//Making an image variable...
exImg.src='img/knop.gif'	//...this is the source of the image that it changes to when the menu expands.

// NOTE: if you change the position of divCont from absolute to relative, you can put the foldoutmenu in a table.
// HOWEVER it will no longer work in netscape 4. If you wish to support netscape 4, you have to use absolute positioning.

/*** There should be no need to change anything beyond this. ***/

// A unit of measure that will be added when setting the position of a layer.
var px = bw.ns4||window.opera?"":"px";

if(navigator.userAgent.indexOf('Opera')>-1 && document.getElementById){ //Opera 5 resize fix.
	scrX= innerWidth; scrY= innerHeight;
	document.onmousemove= function(){
		if(scrX<innerWidth-10 || scrY<innerHeight-10 || scrX>innerWidth+10 || scrY>innerHeight+10){
			scrX = innerWidth;
			scrY = innerHeight;
			initFoldout();
		}
	};
}

//object constructor...
function makeMenu(obj,nest){
	nest= (!nest)?"":'document.'+nest+'.';
	this.el= bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):document.getElementById(obj);	
   	this.css= bw.ns4?this.el:this.el.style;
	this.ref= bw.ns4?this.el.document:document;		
	this.x= (bw.ns4||bw.opera5)?this.css.left:this.el.offsetLeft;
	this.y= (bw.ns4||bw.opera5)?this.css.top:this.el.offsetTop;
	this.h= (bw.ie||bw.ns6)?this.el.offsetHeight:bw.ns4?this.ref.height:bw.opera5?this.css.pixelHeight:0;
    this.vis= b_vis;
	this.hideIt= b_hideIt;
    this.showIt= b_showIt;
    this.moveIt= b_moveIt;
	return this
}
//object methods...
function b_showIt(){this.css.visibility='visible'}
function b_hideIt(){this.css.visibility='hidden'}
function b_vis(){if(this.css.visibility=='hidden' || this.css.visibility=='HIDDEN' || this.css.visibility=='hide') return true;}
function b_moveIt(x,y){this.x=x; this.y=y; this.css.left=this.x+px; this.css.top=this.y+px}

/************************************************************************************
This is the function that changes the sub menus to folded or unfolded state.
************************************************************************************/
function menu(num){
	if(bw.bw){
		if (!stayFolded){
			for (var i=0; i<oSub.length; i++){
				if (i!=num){
					oSub[i].hideIt()
					if (foldImg)oTop[i].ref["imgA"+i].src = unImg.src
				}
			}
			for(var i=1; i<oTop.length; i++){
				oTop[i].moveIt(0,oTop[i-1].y+oTop[i-1].h)
			}
		}
		if (oSub[num].vis()){
			oSub[num].showIt()
			if (foldImg)oTop[num].ref["imgA"+num].src = exImg.src
		}else{
			oSub[num].hideIt()
			if(foldImg)oTop[num].ref["imgA"+num].src = unImg.src
		}
		for(var i=1; i<oTop.length; i++){ 
			if (!oSub[i-1].vis()) oTop[i].moveIt(0,oTop[i-1].y+oTop[i-1].h+oSub[i-1].h+mainOffsetY) 
			else oTop[i].moveIt(0,oTop[i-1].y+oTop[i-1].h+mainOffsetY)
		}
	}
}

/*********************************************************************
The init function... there should be no need to change anything here.
*********************************************************************/
function initFoldout(){
	//Fixing the browsercheck for opera... this can be removed if the browsercheck has been updated!!
	bw.opera5 = (navigator.userAgent.indexOf("Opera")>-1 && document.getElementById)?true:false
	if (bw.opera5) bw.ns6 = 0

	oTop = new Array()
	oSub = new Array()
	//Making the objects and hiding the subs...
	for (var i=0; i<FoldNumber; i++){
		oTop[i] = new makeMenu('divTop'+i,'divCont')
		oSub[i] = new makeMenu('divSub'+i,'divCont.document.divTop'+i)
		oSub[i].hideIt()
	}
	
	//Positioning the top objects...
	oTop[0].moveIt(0,0)
	for (var i=1; i<oTop.length; i++){
		oTop[i].moveIt(0, oTop[i-1].y+oTop[i-1].h+mainOffsetY)
	}
	
	//Making the containing menu object and showing it...
	oCont = new makeMenu('divCont')
	oCont.showIt()
}

// If the browser is ok, the script is started onload...
if(bw.bw) onload = initFoldout;

		

<!-- begin menu-script (made with CodeOnRequest.nl) -->

<!--
timers=new Array()
scrolling=new Array()
cur=new Array()
strup=new Array()
strdo=new Array()

function getStyle( layer ) {
  if( document.getElementById ) {
    return document.getElementById( layer ).style
  } else if( document.all ) {
    return document.all[layer].style
  } else {
    return document[layer]
  }
}

function chopPx(du) {
  if (du.indexOf("p")>-1) {
    return Math.floor(du.substr(0,du.length-2))
  } else {
    return Math.floor(du)
  }
}

function setBackground(layer, bg) {
  if (bg.indexOf(".gif") > -1 || bg.indexOf(".jpg") > -1) {
    // set background image
    getStyle(layer).backgroundImage="url("+bg+")"
  } else {
    // set background color
    getStyle(layer).backgroundColor=bg
  }
}

function dropDown(layer) {
  nr=layer.substr(7,layer.length)
  switch (scrolling[nr]) {
    case -1:
      if (timers[nr]) {
        clearTimeout(timers[nr])
        timers[nr]=null
      }
    case 1:
    case undefined:
      if (timers[nr]==null) {
        cur[nr] = chopPx(getStyle(layer).top)
        end = chopPx(getStyle('menu'+nr).top) + chopPx(getStyle('menu'+nr).height)
        strdo[nr] = "cur["+nr+"]+=Math.sqrt("+end+"-cur["+nr+"]);getStyle('"+layer+"').top=cur["+nr+"]; if( chopPx(getStyle('"+layer+"').top) < "+end+"-1 ) { timers["+nr+"]=setTimeout(strdo["+nr+"],50) } else {clearTimeout(timers["+nr+"]);timers["+nr+"]=null }"
        scrolling[nr]=1
        if( chopPx(getStyle(layer).top) < end-1 ) { timers[nr] = setTimeout(strdo[nr],50) }
      }
  }
}

function pullUp(layer) {
  nr=layer.substr(7,layer.length)
  switch (scrolling[nr]) {
    case 1:
      if (timers[nr]) {
        clearTimeout(timers[nr])
        timers[nr]=null
      }
    case -1:
      if (timers[nr]==null) {
        cur[nr] = chopPx(getStyle(layer).top)
        end = chopPx(getStyle('menu'+nr).top) + chopPx(getStyle('menu'+nr).height) - chopPx(getStyle(layer).height)
        strup[nr] = "cur["+nr+"]-=Math.sqrt(cur["+nr+"]-("+end+"));getStyle('"+layer+"').top=cur["+nr+"]; if( chopPx(getStyle('"+layer+"').top) > "+end+") { timers["+nr+"]=setTimeout(strup["+nr+"],50) } else {clearTimeout(timers["+nr+"]);timers["+nr+"]=null }"
        scrolling[nr]=-1
        if( chopPx(getStyle(layer).top) > end ) { timers[nr] = setTimeout(strup[nr],50) }
      }
  }
}