function ShowHide(id) {
	obj = document.getElementsByTagName("div");
	if (obj[id].style.visibility == 'visible'){
		obj[id].style.visibility = 'hidden';
	} else {
		obj[id].style.visibility = 'visible';
	}
}

//sfHover = function() {
//	var sfEls = document.getElementById("navmain123456").getElementsByTagName("LI");
//	for (var i=0; i<sfEls.length; i++) {
//		sfEls[i].onmouseover=function() {
//			this.className+=" sfhover";
//		}
//		sfEls[i].onmouseout=function() {
//			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
//		}
//	}
//}
//if (window.attachEvent) window.attachEvent("onload", sfHover);


function CheckZoek(keywords) {
if (zoekForm.keywords.value=='')
  {
    alert("U heeft geen zoekterm ingevuld");
    zoekForm.keywords.focus();
    return (false);
  }
if (zoekForm.keywords.value=='zoeken')
  {
    alert("U heeft geen zoekterm ingevuld");
    zoekForm.keywords.focus();
    return (false);
  }
  return (true)
}

function MM_goToURL() { //v3.0
  var i, args=MM_goToURL.arguments; document.MM_returnValue = false;
  for (i=0; i<(args.length-1); i+=2) eval(args[i]+".location='"+args[i+1]+"'");
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}



// styleswitcher

function fontsizeup() {
  active = getActiveStyleSheet();
  switch (active) {
    case 'A-' : 
      setActiveStyleSheet('A');
      break;
    case 'A' : 
      setActiveStyleSheet('A+');
      break;
    default :
      setActiveStyleSheet('A+');
      break;
  }
}

function fontsizedown() {
  active = getActiveStyleSheet();
  switch (active) {
    case 'A+' : 
      setActiveStyleSheet('A');
      break;
    case 'A' : 
      setActiveStyleSheet('A-');
      break;
    default :
      setActiveStyleSheet('A-');
      break;
  }
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  return ('A-');
}

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 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;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
if (title == 'null') {
  title = getPreferredStyleSheet();
}

setActiveStyleSheet(title);

// end styleswitcher