function changeRes(){
if (parseInt(navigator.appVersion)>3) {
 if(window.innerWidth){
  var bbreedte = window.innerWidth;
  var bhoogte = window.innerHeight;
  var bbreedte = bbreedte-40;
  var bhoogte = bhoogte-105;
  var bmenu = (bhoogte/100)*46;
  var bcontentw = bbreedte-bmenu;
  var bcontenth = bhoogte-6;
 }
else {
  var bbreedte = document.body.offsetWidth;
  var bhoogte = document.body.offsetHeight;
  var bbreedte = bbreedte-45;
  var bhoogte = bhoogte-105;
  var bmenu = (bhoogte/100)*46;
  var bcontentw = bbreedte-bmenu;
  var bcontenth = bhoogte-6;
 }
}
	document.getElementById("menu").width = bmenu;
	document.getElementById("menu").height = bhoogte;
	document.getElementById("contentdiv").style.width = bcontentw;
	document.getElementById("contentdiv").style.height = bcontenth;
	document.getElementById("bglinks").height = bhoogte;
	document.getElementById("bgmidden").width = bbreedte;
	document.getElementById("bgmidden").height = bhoogte;
	document.getElementById("bgrechts").height = bhoogte;
//alert("menu breedte:"+bmenu+" contentdiv breedte: "+bcontent+"px")
}

function jumpTo(form){
  if (form.value != "null") {
    document.location.href = form.options[form.options.selectedIndex].value;
  }
}

function popUp(URL,width,height) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=" + width + ",height=" + height + ",left = 0,top = 0');");
}