<!-- //verberg script

function n(url,breedte,hoogte) {
OpenWindow=window.open(url,"formulier", "width=" + breedte + ",height=" + hoogte + ",left=20,top=20,toolbar=auto,scrollbars=no,menubar=no,resizable=no,location=no,directories=no,status=no");
}

function c(details, output, w, h, scroll) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable=no'
win = window.open(details, output, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

	function checkNumber(event)
	{
		if(document.all)
			keycode = event.keyCode;
		else
			keycode = event.which;
		
		//alert(keycode);
		if((keycode >=48 && keycode <= 58) || keycode==8)
        {
			return true;
        }
		else
        {
			return false;
        }
	}

//stop met verbergen -->