// JavaScript Document
function count_persDivs() {
		var allDIVS = document.getElementsByTagName('DIV');
		var el, i = 0, howmany = 0;
		while (el = allDIVS.item(i++)) if (el.id.substr(0,4) == 'pers') howmany++;
		return howmany;
}

function medewerkers(id) {
	var howmanypersDivs;
	howmanypersDivs = count_persDivs();

	for(d = 0; d < howmanypersDivs; d++)
	{
		if(id != 'pers'+(d+1)) 	{  	document.getElementById('pers'+(d+1)).style.display = 'none'; 	}
		else { document.getElementById('pers'+(d+1)).style.display = 'block'; }
	}
}


function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }


function LoadPic(classname) {
	var obj = document.getElementsByClassName(classname);
	var counter;
	
	for(i = 0; i < obj.length; i++)
	{
		obj[i].style.display = 'none';	
	}
	
	obj[0].style.display = 'block';
}

function ShowPic(classname, direction) {
	
	var imgs = document.getElementsByClassName(classname);
	index = 0;
	
	imgs[0].style.display = 'block';
	
	if(direction == 'next')
	{
		/*for(i = 0; i < obj.length; i++)
		{
			next = i+1;
			alert(next);
			
			if(obj[i].style.display == 'block') { obj[i].style.display = 'none';  obj[next].style.display = 'block'; }
			break;
		}*/
		imgs[index].style.display = 'none';
		index = (index + 1) % imgs.length;
		imgs[index].style.display = 'block';
		
	}
	
	if(direction == 'prev')
	{
		for(i = 0; i < obj.length; i++)
		{
			prev = i-1;
			alert(prev);
			
			if(obj[i].style.display == 'block') { obj[i].style.display = 'none';  obj[prev].style.display = 'block'; }
			
		}
	}
	
	
	/*obj[0].style.display = 'block';
	
	//document.getElementById(id).style.display = 'block';
	var extract = id.slice(3);
	var next = parseInt(extract) + 1;
	
	alert(next);
	obj[next].style.display = 'block';
	//writeCookie(extract);*/
}



function writeCookie(picid)
{

var expdate = new Date();
expdate.setTime ( expdate.getTime() + (60 * 60) );
//cookie is 1 uur geldig
var the_cookie_date = expdate.toGMTString();

//var the_cookie = "menuid=test";
var the_cookie = "picid=" + picid;
var the_cookie = the_cookie + ";expires=" + the_cookie_date;
document.cookie = the_cookie
}

function checkCookie()
{
	var x = readCookie('picid');	
}