function createCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}

function eraseAllCookies(name)
{
 	if (document.cookie != null && document.cookie.length > 0) {
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++)
		{
			var c = ca[i];
			while (c.charAt(c.length - 1)!='=') c = c.substring(0,c.length - 1);
			c = c.substring(0,c.length - 1);
			eraseCookie(c);
		}
	}
	
	alert('Alle cookies voor deze site zijn verwijderd!');
}

function getCookieNietMSTLID() 
{
	return getDoelgroepCookieItem(0);
}

function getCookieMSTLID() 
{
	return getDoelgroepCookieItem(1);
}

function getCookieDoelgroep() 
{
	return getDoelgroepCookieItem(2);
}

function getDoelgroepCookieItem(index) 
{
	var cookievalue = readCookie('stldoelgroep');
	var sections = cookievalue.split('_');
	if (sections.length > index) {
		return sections[index];
	}
}