function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}



function taalknoppen() {
	var imgnl = document.getElementById("imagenl");
	if(imgnl) {
		imgnl.onmouseout = function() {
			MM_swapImgRestore();
		}
		imgnl.onmouseover = function() {
			MM_swapImage('Image1','','/images/nl_over.gif',1);
		}
	}
	var imgfr = document.getElementById("imagefr");
	if(imgfr) {
		imgfr.onmouseout = function() {
			MM_swapImgRestore();
		}
		imgfr.onmouseover = function() {
			MM_swapImage('Image2','','/images/fr_over.gif',1);
		}
	}
}	

addLoadEvent(taalknoppen);