var active = '';
var zindex = 80;
function popup(n) {
	var el = document.getElementById('popup-' + n);
	if(el) {
		el.style.zIndex = ++zindex;
		el.style.visibility = 'visible';
		pactive = n;
	}
}
function closePopup(n) {
	var el = document.getElementById('popup-' + n);
	if(el) {
		el.style.visibility = 'hidden';
	}
	return(false);
}
function consumeEvent(evt) {
	if (!evt) var evt = window.event;
	evt.cancelBubble = true;
	if (evt.stopPropagation) evt.stopPropagation();
}
function hiLite(imgDocID, imgObjName) {
	if(active != imgDocID) {
		document.images[imgDocID].src = eval(imgObjName + ".src");
	}
}
function checkForm(frm) {
	return(frm.search.value.length ? true : false);
}
function show(evt, id) {
	document.getElementById('menu-over-crem').style.visibility = 'hidden';
	document.getElementById('menu-producten-en-diensten').style.visibility = 'hidden';
	document.getElementById('menu-nieuws').style.visibility = 'hidden';
	document.getElementById('menu-werkvelden').style.visibility = 'hidden';
	if(id.length) {
		document.getElementById('menu-' + id).style.visibility = 'visible';
	}
	active = id;
	if(id != 'over-crem') {
		hiLite('over-crem', 'over_crem_menu');
	}
	if(id != 'producten-en-diensten') {
		hiLite('producten-en-diensten', 'producten_en_diensten_menu');
	}
	if(id != 'nieuws') {
		hiLite('nieuws', 'nieuws_menu');
	}
	if(id != 'werkvelden') {
		hiLite('werkvelden', 'werkvelden_menu');
	}
	consumeEvent(evt);
	return(false);
}
var ie = document.all;
var nn6 = document.getElementById&&!document.all;
var isdrag = false;
var x, y;
var dobj;

function movemouse(e) {
	if(isdrag) {
		dobj.style.left = nn6 ? tx + e.clientX - x : tx + event.clientX - x;
		dobj.style.top  = nn6 ? ty + e.clientY - y : ty + event.clientY - y;
		return(false);
	}
}

function selectmouse(e) {
	var fobj       = nn6 ? e.target : event.srcElement;
	var topelement = nn6 ? 'HTML' : 'BODY';
	var flag = false;
	while(fobj.tagName != topelement && fobj.className != 'popup') {
		if(fobj.className == 'popuptitle')
			flag = true;
		fobj = nn6 ? fobj.parentNode : fobj.parentElement;
	}
	if(fobj.className == 'popup') {
		fobj.style.zIndex = ++zindex;
		if(flag) {
			isdrag = true;
			dobj = fobj;
			tx = parseInt(dobj.style.left + 0, 10);
			ty = parseInt(dobj.style.top + 0, 10);
			x = nn6 ? e.clientX : event.clientX;
			y = nn6 ? e.clientY : event.clientY;
			document.onmousemove = movemouse;
			return(false);
		}
	}
}
document.onmousedown = selectmouse;
document.onmouseup = new Function('isdrag = false');
var over_crem_menu = new Image();
var over_crem_menu_actief = new Image();
var producten_en_diensten_menu = new Image();
var producten_en_diensten_menu_actief = new Image();
var werkvelden_menu = new Image();
var werkvelden_menu_actief = new Image();
var nieuws_menu = new Image();
var nieuws_menu_actief = new Image();
var kruis = new Image();
var kruis_over = new Image();
var kruis_in = new Image();
kruis.src = 'img/kruis.gif';
kruis_over.src = 'img/kruis-over.gif';
kruis_in.src = 'img/kruis-in.gif';