function findObj(n, d) { //v3.0
  var p,i,x; 
  if(!d) d=document;
  if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document); return x;
}
/* Functions that swaps down images. */
function nbGroup(event, grpName) { //v3.0
  var i,img,nbArr,args=nbGroup.arguments;
  //top.banner.focus();
  if (event == "init" && args.length > 2) {
    if ((img = findObj(args[2])) != null && !img.init) {
      img.init = true; img.up = args[3]; img.dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = findObj(args[i])) != null) {
        if (!img.up) img.up = img.src;
        img.src = img.dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = findObj(args[i])) != null) {
      if (!img.up) img.up = img.src;
     img.src = (img.dn && args[i+2]) ? args[i+2] : args[i+1];
     nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.nbOver.length; i++) {
      img = document.nbOver[i]; img.src = (img.dn) ? img.dn : img.up; }
  } else if (event == "down") {
    if ((nbArr = document[grpName]) != null)
      for (i=0; i < nbArr.length; i++) {img=nbArr[i]; img.src = img.up; img.dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2)  if ((img = findObj(args[i])) != null) {
      if (!img.up) img.up = img.src;
      img.src = img.dn = args[i+1];
      nbArr[nbArr.length] = img;
  } }
}

/* Functions that handle preload. */
function preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.p) d.p=new Array();
   var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
   if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
}

function scroll_check() 
{
	
	if(navigator.appName.indexOf("Microsoft")>-1)
	{
		y_oud=top.main.document.body.scrollTop;
		parent.main.scrollTo(0,y_oud+1);
		y_nieuw=top.main.document.body.scrollTop;
		if(y_oud!=y_nieuw) 
		{ 
			top.frames[4].focus();
			top.frames[4].document.all["scrollbar"].style.visibility="visible";
		}
		else
		{
			top.frames[4].focus();
			top.frames[4].document.all["scrollbar"].style.visibility="hidden"; 
		}
	}
}

item_clicked="";
niveau_clicked="";
afbeelding = new Array ("convenant","wereldtop","efficiencyplan","voortgang","commissie","vbe","nieuws","faq","links","contact","zoeken","sitemap","english");
function effect(item,soort,niveau,sitemap) 
{
	if(sitemap) 
	{
		top.menubottom.document['sitemap'].src='images/_menubottom/sitemap.gif';
		top.menubottom.document['zoeken'].src='images/_menubottom/zoeken.gif';
		top.frames[niveau].document[item].src='images/_'+niveau+'/'+ item +'_f3.gif';
	}
	if(soort=='over')
	{
		document_old=document[item].src;
		document[item].src='images/_'+niveau+'/'+ item +'_f2.gif';		
	}
	else if(soort=='out')
	{
		document[item].src=document_old;
	}
	else if(soort=='click')
	{
		for(i=0;i<afbeelding.length;i++)
		{
			(i<7)?top.banner.document[(afbeelding[i])].src='images/_banner/'+ afbeelding[i] +'.gif':top.menubottom.document[(afbeelding[i])].src='images/_menubottom/'+ afbeelding[i] +'.gif';
		}
		if(niveau=='banner')
		{
			top.banner.document[item].src='images/_'+niveau+'/'+ item +'_f3.gif';
		}
		else
		{
			top.menubottom.document[item].src='images/_'+niveau+'/'+ item +'_f3.gif';
		}
		//document_old=document[item].src;
	}
}