function menu(nr,butn,lok){
	document.getElementById("menu_"+nr).src = lok+"butns/"+butn+".png";
}

function laatFotoZien(nummer){
	
	var loc = document.getElementById("loc").value;
	
	var width  = 800;
	var height = 700;
	var left = ((screen.width - width) / 2);
	var top  = ((screen.height - height) / 2);
	window.open(loc+"includes/foto.php?foto="+nummer,"","scrollbars=1,menubar=0,resizable=0,width=" +width+ ",height=" +height+ ",left=" + left + ",top=" + top + "");
	
}