var a
a= new Array();
a[0]=new Image;
a[0].src="v2/afb/Btn_resultatenbekijken.gif";
a[1]=new Image;
a[1].src="v2/afb/Btn_resultatenbekijken1.gif";
a[2]=new Image;
a[2].src="v2/afb/OK.gif";
a[3]=new Image;
a[3].src="v2/afb/OK1.gif";
a[4]=new Image;
a[4].src="v2/afb/resultaten.gif";
a[5]=new Image;
a[5].src="v2/afb/resultaten1.gif";
a[6]=new Image;
a[6].src="v2/afb/gastenboek.gif";
a[7]=new Image;
a[7].src="v2/afb/gastenboek1.gif";



var results = "v2/resmenu.php"
var menu= "v2/menu.php"
var familienaam
var wijzer ="http://www.wijzer.be"
var atwork="v2/atwork.htm"
var gastenboek="http://rekenoefeningen.tboek.nl"

function open_win(venster) {

	window.open(venster, "_blank","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, fullscreen=yes")

		}

function open_venster() {
  window.open("http://rekenoefeningen.tboek.nl")
}

function Get_Cookie( name ) {

	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) )
	{
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ";", len );
	if ( end == -1 ) end = document.cookie.length;
	naam = unescape( document.cookie.substring( len, end ) );
//	alert(naam)
	return unescape( document.cookie.substring( len, end ) );
}


function Set_Cookie( name, value, expires, path, domain, secure ) {
	// set time, it's in milliseconds
	var today = new Date();
	today.setTime( today.getTime() );
	// if the expires variable is set, make the correct expires time, the
	// current script below will set it for x number of days, to make it
	// for hours, delete * 24, for minutes, delete * 60 * 24
	if ( expires )
	{
		expires = expires * 1000 * 60 * 60;
	}
//	alert( 'today ' + today.toGMTString() );// this is for testing purpose only
	var expires_date = new Date( today.getTime() + (expires) );
//	alert('expires ' + expires_date.toGMTString());// this is for testing purposes only

	document.cookie = name + "=" +escape( value ) +
		( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + //expires.toGMTString()
		( ( path ) ? ";path=" + path : "" ) +
		( ( domain ) ? ";domain=" + domain : "" ) +
		( ( secure ) ? ";secure" : "" );
}


function Delete_Cookie( name, path, domain ) {
	if ( Get_Cookie( name ) ) document.cookie = name + "=" +
			( ( path ) ? ";path=" + path : "") +
			( ( domain ) ? ";domain=" + domain : "" ) +
			";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}
function begin() {

var voornaam = document.getElementById('voornaam').value.toLowerCase();
var familienaam = document.getElementById('familienaam').value.toLowerCase();
var username = voornaam+" "+familienaam;

if (voornaam == ""){
   alert("Je voornaam invullen a.u.b.")
   document.getElementById('voornaam').focus()
   return false
   }
if (familienaam == "") {
   alert("De eerste letter van je familienaam invullen a.u.b.")
   document.getElementById('familienaam').focus()
   return false
   }
if (familienaam.length > 1) {
   alert("Enkel de eerste letter van je familienaam invullen a.u.b.")
   document.getElementById('familienaam').value = ""
   document.getElementById('familienaam').focus()
   return false
   }
//alert(username)
    	Set_Cookie('rekenen',username, 1, '/','rekenenwijzer.be','')
     open_win(menu)
//		alert(document.cookie)
	}
function initialiseren() {
document.getElementById('voornaam').focus()
}
 function roll(img,nb) {
	eval("img.src=a["+nb+"].src");
}
function show_popup()  {
var p=window.createPopup()
var pbody=p.document.body
pbody.style.backgroundColor="white"
pbody.style.border="solid black 1px"
pbody.innerHTML="Mogelijks ondervind je problemen om de oefeningen te starten.<br>Je kan dit oplossen door je internetbeveiliging zoals Norton en andere uit te schakelen !<br><br>Dit venster kan je sluiten door te klikken buiten dit venster."
p.show(150,150,300,180,document.body)
}
 function entertoets(myfield, e, dec){
 var key;
 var keychar;

 if (window.event)
    key = window.event.keyCode;
    else if (e)
    key = e.which;
    else
   return true;
   keychar = String.fromCharCode(key);

   if (key==13)
      if(myfield == document.getElementById("voornaam")){
       document.getElementById("familienaam").focus()}
        else {
          document.getElementById("ok").click()
       }
else if ((("abcdefghijklmnopqrstuvwxyz").indexOf(keychar) > -1))
    return true;
// decimal point jump
else if (dec && (keychar == "."))
    {
    myfield.form.elements[dec].focus();
    return false;
    }
else
    return false;
}