// JavaScript Document
function right(e) {
    if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2))
      return false;
    else 
      if (navigator.appName == 'Microsoft Internet Explorer' &&  (event.button == 2 || event.button == 3)) { 
        alert('Nicht moeglich !');
        return false; 
      }  
      else 
        if (navigator.appName == 'Mozilla' &&  (event.button == 2 || event.button == 3)) { 
          alert('Nicht moeglich !');
          return false; 
        }
    return true;
}
  document.onmousedown=right;
  if (document.layers) window.captureEvents(Event.MOUSEDOWN);
  window.onmousedown=right;
 /*end function right */