// JavaScript Document

// Dit kun je aanpassen

var vertraging=0     // vertragingstijd menu vooraleer te verdwijnen (in milliseconden)
var hoofdlink=1         // werking hoofdlink in- of uitschakelen (1=in, 0=uit)
var verbergen=1         // menu verbergen na aanklikken subitem (1=ja, 0=nee)


// Hieronder niets meer wijzigen

var ie5=document.all
var ns6=document.getElementById&&!document.all

function positie_bepalen(voorwerp, offsettype){
	var totaloffset=(offsettype=="left")? voorwerp.offsetLeft : voorwerp.offsetTop;
	var parentEl=voorwerp.offsetParent;
	while (parentEl!=null){
		totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
		parentEl=parentEl.offsetParent;
		}
	return totaloffset;
	}

function tonen_verbergen(obj, e, visible, hidden, i){
	if (ie5||ns6){ 
		menuobject.style.left=menuobject.style.top=-500
		}
	if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover"){ 
		obj.visibility=visible;
		
		}
	else if (e.type=="click"){
		obj.visibility=hidden;

		}
	}

function iecompattest(){
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
	}

function rand_bereikt(obj, welke_rand){
	var edgeoffset=0;
	if (welke_rand=="rightedge"){
		var vensterrand=ie5 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
		menuobject.contentmeasure=menuobject.offsetWidth
		
	if (vensterrand-menuobject.x < menuobject.contentmeasure){ 
		edgeoffset=menuobject.contentmeasure-obj.offsetWidth
		}
	else{
		var vensterrand=ie5 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
		menuobject.contentmeasure=menuobject.offsetHeight
		}
		}
	if (vensterrand-menuobject.y < menuobject.contentmeasure){
		edgeoffset=menuobject.contentmeasure+obj.offsetHeight
		}
	return edgeoffset
	}

function toonmenu(obj, e, dropmenuID, imgName){
	img_act(imgName);
	if (window.event){
		event.cancelBubble=true;
			
		}
	else if (e.stopPropagation){ 

		e.stopPropagation()
		}
	if (typeof menuobject!="undefined"){ 
		menuobject.style.visibility="hidden";
		clearhidemenu();
	}

if (ie5||ns6){
	menuobject=document.getElementById(dropmenuID)
	if (verbergen){
		menuobject.onclick=function(){
			menuobject.style.visibility='hidden';

			}
		menuobject.onmouseover=function() { clearhidemenu(); img_act(imgName)  } 
		menuobject.onmouseout=ie5? function(){ 
			dynamisch_verbergen(event, imgName); } : function(event){  dynamisch_verbergen(event, imgName)}
		tonen_verbergen(menuobject.style, e, "visible", "hidden", imgName)
		menuobject.x=positie_bepalen(obj, "left")
		menuobject.y=positie_bepalen(obj, "top")
		menuobject.style.left=menuobject.x-rand_bereikt(obj, "rightedge")+"px"
		menuobject.style.top=menuobject.y-rand_bereikt(obj, "bottomedge")+obj.offsetHeight+"px"
		}
		obj.onmouseout=function(){
		if(menuobject.style.visibility=='visible') { 
		delayhidemenu(false, imgName)
		} 
		} 

	return klik()
	}

function klik(){
	if ((ie5||ns6) && !hoofdlink) return false
	else return true
	}

function ns6compat(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;}

function dynamisch_verbergen(e, i){
	if (ie5&&!menuobject.contains(e.toElement)){
		delayhidemenu(e, i)
		}
	else if (ns6&&e.currentTarget!= e.relatedTarget&& !ns6compat(e.currentTarget, e.relatedTarget)){
		delayhidemenu(e, i)
		}
	}

function delayhidemenu(e, i){
	img_inact(i);
	delayhide=setTimeout("menuobject.style.visibility='hidden'",vertraging)
	}
function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)}
}