function taste(x) 
{
	if (navigator.appName == 'Netscape' && (x.which == 3 || x.which == 2))
	return false;
	else 
	if (navigator.appName == 'Microsoft Internet Explorer' &&(event.button == 2 || event.button == 3)) 
	{
		alert("Diese Funktion ist deaktiviert. \nCopyright!");
		return false;
	}
	return true;
}
document.onmousedown = taste;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
window.onmousedown = taste;