function submenu(menu) {
	for (var x = 1; x <= 15; x++) {
		id = 'submenu'+x;
		links = 'tab_links'+x;
		midden = 'tab_midden'+x;
		rechts = 'tab_rechts'+x;
		if(document.getElementById(id)!=null) {
			document.getElementById(id).style.visibility='hidden';
			document.getElementById(id).style.display='none';
			document.getElementById(links).style.background='';
			document.getElementById(midden).style.background='';
			document.getElementById(rechts).style.background='url(/images/nav_border.gif) no-repeat bottom right';
		}
	}
	links = 'tab_links'+menu;
	midden = 'tab_midden'+menu;
	rechts = 'tab_rechts'+menu;
	document.getElementById(links).style.background="url(/images/tab_links.gif) no-repeat";
	document.getElementById(midden).style.background="url(/images/tab_midden.gif) repeat-x";
	document.getElementById(rechts).style.background="url(/images/tab_rechts.gif) no-repeat";
	menu = 'submenu'+menu;
	document.getElementById(menu).style.visibility='visible';
	document.getElementById(menu).style.display='';	
}
function submenu2(menu) {
	menu = 'sub-menu'+menu;
	document.getElementById(menu).style.visibility='visible';
	document.getElementById(menu).style.display='inline';	
}
function submenu3(menu) {
	id = 'sub-menu'+menu;
	if(document.getElementById(id)!=null) {
		document.getElementById(id).style.visibility='hidden';
		document.getElementById(id).style.display='none';
	}
}

function nieuwstab(tab) {
	if(tab==1) {
		document.getElementById('nieuwstab2').style.visibility='hidden';
		document.getElementById('nieuwstab2').style.display='none';
		document.getElementById('nieuwstab1').style.visibility='visible';
		document.getElementById('nieuwstab1').style.display='';
		document.getElementById('nieuwstab_een').className='nieuws_tabs_gekozen';
		document.getElementById('nieuwstab_twee').className='nieuws_tabs';
		document.getElementById('nieuwstab_drie').className='nieuws_tabs';
	}
	if(tab==2) {
		document.getElementById('nieuwstab1').style.visibility='hidden';
		document.getElementById('nieuwstab1').style.display='none';
		document.getElementById('nieuwstab2').style.visibility='visible';
		document.getElementById('nieuwstab2').style.display='inline';
		document.getElementById('nieuwstab_een').className='nieuws_tabs';
		document.getElementById('nieuwstab_twee').className='nieuws_tabs_gekozen';
		document.getElementById('nieuwstab_drie').className='nieuws_tabs';
	}
	if(tab==3) {
		document.getElementById('nieuwstab_een').className='nieuws_tabs';
		document.getElementById('nieuwstab_twee').className='nieuws_tabs';
		document.getElementById('nieuwstab_drie').className='nieuws_tabs_gekozen';
	}
}
var bookmarkurl="http://www.magisterjft.nl/"
var bookmarktitel="Magister JFT"
function favorieten(){
if (document.all)
	window.external.AddFavorite(bookmarkurl,bookmarktitel)
} 

function agenda(info) {
	$("#agenda"+info).toggle("slow");
}

function initAjaxRequest() {
	var request;
	if (window.ActiveXObject) {
		request = new ActiveXObject("Microsoft.XMLHTTP");
	} else {
		request = new XMLHttpRequest();
	}
	return request;
}

function sendAjaxGetRequest(url, container) {
	ajaxRequest = initAjaxRequest();
	var rand = Math.random();
	ajaxRequest.open('GET', ''+url+'&rand='+rand+'');
	ajaxRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		ajaxRequest.onreadystatechange = function() {
		if (ajaxRequest.readyState == 4) {
			document.getElementById(container).innerHTML = ajaxRequest.responseText;
			$('.javascript').each(function() {
				eval($(this).text());
			});
		}
	}
	ajaxRequest.send(null);
}

function get_radio_value(id, soort)
{
for (var i=0; i < document.getElementsByName('keuze').length; i++) {
   if (document.getElementsByName('keuze')[i].checked)
      {
      var keuze = document.getElementsByName('keuze')[i].value;
	  if(soort == 1) keuze=6;
	  if(soort == 2) keuze=7;
	  sendAjaxGetRequest('/ajax/polls.php?id='+id+'&keuze='+keuze, 'poll');
      }
   }
}

function nieuwsbrief(email)
{
	  sendAjaxGetRequest('/ajax/nieuwsbrief.php?email='+email, 'nieuwsbrief_vak');
}