function right(e) {
var msg = "© Muziek- en Organisatieburo Jos van der Aa";
if (navigator.appName == 'Netscape' && e.which == 3) {
alert(msg);
return false;
}
else
if (navigator.appName == 'Microsoft Internet Explorer' && event.button==2) {
alert(msg);
return false;
}
return true;
}
document.onmousedown = right;



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