var expDays = 20; // number of days the cookie should last

function writeTaalCookie(taal,url){

	var exp = new Date(); 
	exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
	SetCookie("taalkeuze",taal,exp);	
	window.location=url;
}

function GetCookie (name) {  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	while (i < clen) {    
		var j = i + alen;    
		if (document.cookie.substring(i, j) == arg)      
			return getCookieVal (j);    
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) break;   
	}  
	return null;
}

function SetCookie (name, value) {  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = (argc > 2) ? argv[2] : null;  
	var path = (argc > 3) ? argv[3] : null;  
	var domain = (argc > 4) ? argv[4] : null;  
	var secure = (argc > 5) ? argv[5] : false;  
	document.cookie = name + "=" + escape (value) + 
		((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
		((path == null) ? "" : ("; path=" + path)) +  
		((domain == null) ? "" : ("; domain=" + domain)) +    
		((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {  
	var exp = new Date();  
	exp.setTime (exp.getTime() - 1);  
	var cval = GetCookie (name);  
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

function amt(){
	var count = GetCookie('count');
	if(count == null) {
		SetCookie('count','1');
		return 1
	}
	else {
		var newcount = parseInt(count) + 1;
		DeleteCookie('count');
		SetCookie('count',newcount,exp);
		return count;
	}
}

function getCookieVal(offset) {
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr == -1)
		endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr));
}

function checkCount() {
	var count = GetCookie('count');
	if (count == null) {
		count=1;
		SetCookie('count', count, exp);
		window.open(page, "", windowprops);

	}
	else {
		count++;
		SetCookie('count', count, exp);
	}
}

function showGift(giftID){
	url = '/subscribe/showgift.jsp?id=' + giftID;
	window.open(url, 'Geschenk', 'width=500,height=400,scrollbar=no');
}

function check(nummer){
	if (document.forms[nummer].length > 6){
		for (var i = 0; i<(document.forms[nummer].length-5); i++){
			if (document.forms[nummer].geschenk[i].checked){
				return true;
			}
		}
	}else{
		if (document.forms[nummer].geschenk != null){
			if (document.forms[nummer].geschenk.checked){
				return true;
			}
		}else{
			return true;
		}
	}
	alert("Kies een geschenk bij de aanbieding.");
	return false;
}

function checkform(nummer){
	var count = 0
		if (document.forms[nummer].length > 6){
			for (var i = 0; i<(document.forms[nummer].length-5); i++){
				if (document.forms[nummer].geschenk[i].checked){
					count = 1;
				}
            }
			if (count == 0){
				alert("Kies je geschenk bij de aanbieding.");
			}else{
				document.forms[nummer].submit();
			}
		}else{
			if (document.forms[nummer].geschenk != null){
				if (document.forms[nummer].geschenk.checked){
					document.forms[nummer].submit();
				}else{
					alert("Kies je geschenk bij de aanbieding.");
				}
			}else{
				document.forms[nummer].submit();
			}
		}
}

function checkBetaalkeuze(){

	if (document.formulier.length > 3){
		for(var i=0; i < (document.formulier.length-2); i++){
			if (document.formulier.keuze[i].checked){
				return true;
			}
		}
	}else{
		if (document.formulier.keuze.checked){
			return true;
		}
	}

	alert("Kies een betaalwijze");
	return false;
}

function isEmail(string) {
		if (string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
			return true;
		else
			return false;
}

function checkGetal2Dag(contents) {
	if (((contents / contents) != 1) && (contents != 0)){
		return false;
	}else{
		if ((contents > 0 && contents <= 31) || contents == "")
			return true;
		else 
			return false;
	}
}

function checkGetal2Maand(contents) {
	if (((contents / contents) != 1) && (contents != 0)){
		return false;
	}else{
		if ((contents > 0 && contents <= 12) || contents == "" )
			return true;
		else 
			return false;
	}
}

function checkGetal2Jaar(contents) {
	if (((contents / contents) != 1) && (contents != 0)){
		return false;
	}else{
		if (contents > 0 || contents == "")
			return true;
		else 
			return false;
	}
}

var win = null;
function NewWindow(mypage,myname,w,h,scroll){
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable';
	win = window.open(mypage,myname,settings);
}

function checkGetal2(contents) {
		if (((contents / contents) != 1) && (contents != 0))
			return false;
		else
			return true;
	}


function checkGetal(contents) {
		if (((contents / contents) != 1) && (contents != 0))
			alert("Gelieve een correct getal in te vullen!");
}