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

function links() {
	var lnkPrint = document.getElementById("print");
	if(lnkPrint) {
		lnkPrint.onclick = function() { print(); return false; }
	}
}

function fotogalerij() {
	Thumbs = document.getElementById("thumb");
	if(Thumbs){
		IMGs = Thumbs.getElementsByTagName("img");
		for(var i=0; i< IMGs.length; i++) {
			IMGs[i].onmouseover = function () {
				return changeLarge(this);
			}
		}
	}
}

function changeLarge(thumb) {
	var large = document.getElementById("photo");
	if(thumb && large) {
		// grote foto vervangen
		large.src = thumb.src.replace('th_','');
		large.alt = thumb.alt;
		
		IMGs = Thumbs.getElementsByTagName("img");
		for(var i=0; i< IMGs.length; i++) {
			IMGs[i].className = "";
		}
		thumb.className="active";
		
		return false;
	}
	return true;
}