var activeMenu = null;

var disappeardelay=250
var enableanchorlink=0
var hidemenu_onclick=1
var previousClass="";

var ie5=document.all
var ns6=document.getElementById&&!document.all
var currentObj = null;

function getposOffset(what, offsettype){
	var totaloffset = (offsettype=="left")? what.offsetLeft : what.offsetTop;
	var parentEl = what.offsetParent;

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

function showhide(obj, e, visible, hidden)
{
    if (ie5||ns6)
    dropmenuobj.style.left=dropmenuobj.style.top=-500
    if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
    {
        obj.visibility=visible;
		obj.display='block';
    }
    else if (e.type=="click")
    {
        obj.visibility=hidden
		obj.display='none'
    }
}

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

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie5 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var topedge=ie5 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie5 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move up?
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either?
edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
}

function dropdownmenu(obj, e)
{
	dropmenuID = 'menu-'+obj.id;
 	
    currentObj = obj;
    
    if (window.event) event.cancelBubble=true
    else if (e.stopPropagation) e.stopPropagation()
    
    if (typeof dropmenuobj!="undefined")
    {
        //hide previous menu
        dropmenuobj.style.visibility="hidden"
		dropmenuobj.style.display="none"
    }
    
    clearhidemenu()
    
    if (ie5||ns6)
    {
        obj.onmouseout=delayhidemenu
        dropmenuobj=document.getElementById(dropmenuID)
		if (dropmenuobj.innerHTML == "")
			return false;
		        
        if (hidemenu_onclick) dropmenuobj.onclick=function()
        {
            dropmenuobj.style.visibility='hidden'
			dropmenuobj.style.display='none'
        }
        if (dropmenuobj)
        {
            dropmenuobj.onmouseover=clearhidemenu
            dropmenuobj.onmouseout=ie5? function(){dynamichide(event)} : function(event){ dynamichide(event)}
            showhide(dropmenuobj.style, e, "visible", "hidden")
        }
        var posTop = getposOffset(obj, "top");
        //window.alert(getposOffset(obj, "left"));
        var posLeft = getposOffset(obj, "left");
 
		var browserId = navigator.userAgent;
        if (browserId.indexOf("Safari") > 0)
        {
            posTop += 10; // lower for safari
        }
 
		dropmenuobj.x = posLeft;
        dropmenuobj.y = posTop - 43;
        dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px";
        dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px";
        
        if (ns6)
        {
 			dropmenuobj.x = getposOffset(obj, "left");
 			dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px";
 		}
    }
    
    return clickreturnvalue()
}



function clickreturnvalue(){
if ((ie5||ns6) && !enableanchorlink) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e)
{
    if (ie5&&!dropmenuobj.contains(e.toElement))
    delayhidemenu()
    else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
    delayhidemenu()
}

function delayhidemenu()
{
    delayhide=setTimeout("dropmenuobj.style.visibility='hidden';dropmenuobj.style.display='none';", disappeardelay)
}

function clearhidemenu()
{
    if (typeof delayhide!="undefined")
    clearTimeout(delayhide)
}


////////////vervolg
var keepopen=false;
		
function showMenu() {
	keepopen=true;
	document.getElementById("dropCell").style.backgroundImage = "none";
	document.getElementById("dropMenu").style.visibility = "visible";
}

function hideMenu() {
	if (!keepopen) { 
		document.getElementById("dropMenu").style.visibility = "hidden";
	}
}
	
function hideMenuDelay () {
	keepopen=false;
	setTimeout("hideMenu()",1000);
}