// ********************
// Bij vol veld automatisch naar volgende veld
// ********************
var isNN = (navigator.appName.indexOf("Netscape") !=-1);
var x,y,a,b;
// ********************************************************
// *** CB_functies voor manupuleren van schermelementen ***
// ********************************************************
function CB_autoTab(input,len, e) {											
//Gebruik CB_autoTab om bij invoer van velden met vaste lengte en inhoud (postcode e.d.) 
//automatisch naar volgende velden te aan.
var keyCode = (isNN) ? e.which : e.keyCode; 				
//bepaal property voor uitlezen van keycode (ASCII nummer voor ingetoetst karakter)
var filter = (isNN) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46]; 
//definieer filter (array) voor speciale tekens
if(input.value.length >= len && !CB_containsElement(filter,keyCode)) {
//als de lengte van veld groter is dan lengte en de string geen verboden karakters bevat dan
input.value = input.value.slice(0, len);
//extract first item from array
input.form[(CB_getIndex(input)+1) % input.form.length].focus();		
//zet focus naar volgende veld
};
function CB_containsElement(arr, ele) {					
//als de (keycode) voorkomt in array dan true
var found = false, index = 0;
while(!found && index < arr.length) {
if(arr[index] == ele) {
found = true;
} else {index++;
};
};
return found;
};
function CB_getIndex(input) {
var index = -1, i = 0, found = false;
while (i < input.form.length && index == -1) {
if (input.form[i] == input) {
index = i;
			} else {
				i++;
			};
		};
		return index;
	};
}

function MM_findObj(n, d) { //v4.0
  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=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_submitForm() { //v3.0
  var obj,args=MM_submitForm.arguments; document.MM_returnValue = false;
  obj=MM_findObj(args[0]);
   obj.submit();
}

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 MM_displayStatusMsg(msgStr) { //v1.0
  status=msgStr;
  document.MM_returnValue = true;
}

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_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_openBrWindow(theURL,winName) { //v2.0
  popup=window.open(theURL,winName,"scrollbars=yes,width=333,height=253");
  popup.focus();
}

function MM_openBrWindowVoorwaarden(theURL,winName) { //v2.0
  popupgroot=window.open(theURL,winName,"scrollbars=yes,width=590,height=400");
  popupgroot.focus();
}

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_checkEnter() {
  if (event.keyCode == 13) {
  	self.focus();
   	MM_findObj('submitaction').value='volgende';MM_submitForm('formulier');}}