function MM_findObj(n, d) { //v4.01
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function change_header(formfield,div_to_update,class_name)
{
	var pos=formfield.name.indexOf("@");
	var formfield_name=formfield.name.substr(0,pos);
	document.getElementById(div_to_update).innerHTML='Gelieve hier uw <span class="'+class_name+'"><strong>'+formfield_name+'</strong></span> in te vullen';
	if(formfield.value==formfield_name) 
		formfield.value='';
}
function clear_input(formfield,param1,div_to_update)
{
	var pos=formfield.name.indexOf("@");
	var formfield_name=formfield.name.substr(0,pos);
	document.getElementById(div_to_update).innerHTML=param1;
	if(formfield.value=='') 
		formfield.value=formfield_name;
}

function openChild(childUrl,childName,childWidth,childHeight,childLeft,childTop,childStatus,childScrollbars,childLocation,childTollbar,childMenubar) {
	var newChild = null;
	var childScrollbars = 'yes';
	if (childLeft=='center') {	
		childPosLeft = Math.floor((screen.width - childWidth) / 2);
		if (childTop=='center'||childTop=='middle')
			childPosTop = Math.floor((screen.height - childHeight) / 2);
    	else if (childTop=='top')
			childPosTop = 0;
		else
			childPosTop = screen.height - childHeight-30;
	}
	else if (childLeft=='left') {	
		childPosLeft = 0;
		if (childTop=='center'||childTop=='middle')
			childPosTop = Math.floor((screen.height - childHeight) / 2);
    	else if (childTop=='top')
			childPosTop = 0;
		else
			childPosTop = screen.height - childHeight-30;
	}
	else {	
		childPosLeft = screen.width - childWidth-10;
		if (childTop=='center'||childTop=='middle')
			childPosTop = Math.floor((screen.height - childHeight) / 2);
    	else if (childTop=='top')
			childPosTop = 0;
		else
			childPosTop = screen.height - childHeight-30;
	}
	newChild = window.open(childUrl,childName,'width='+childWidth+',height='+childHeight+',innerwidth='+childWidth+',innerheight='+ childHeight+',top='+childPosTop+',left='+childPosLeft+',status='+childStatus+',scrollbars='+childScrollbars+',location='+childLocation+',toolbar='+childTollbar+',menubar='+childMenubar);
	if (newChild != null)
		newChild.window.focus();
}

function write_table_header(tableheight)
{
	var remaining_height=Math.round((document.body.clientHeight-tableheight)/2);
	// calculate percentage of total height
	var percentage=Math.round((remaining_height/document.body.clientHeight)*100+0.5);
	document.write("<tr height='"+percentage+"%'>");
}