<!--
//JavaScript verbergen voor oude browsers
     
//Disable right mouse click Script

if (window.name !="Lessen"){window.location="../index.htm"}

var isNS = (navigator.appName == "Netscape") ? 1 : 0;

if(isNS)
{
 document.captureEvents(Event.MOUSEDOWN);
 document.captureEvents(Event.MOUSEUP);
 document.captureEvents(Event.KEYDOWN);
 document.captureEvents(Event.KEYPRESS);
 document.captureEvents(Event.KEYUP);
}

function mischandler()
{
 return false;
}

function mousehandler(e)
{
 var myevent = (isNS) ? e : event;
 var eventbutton = (isNS) ? myevent.which : myevent.button;
 if((eventbutton==2)||(eventbutton==3)) {return false; }
}

function keyhandler(e)
{
 var myevent = (isNS) ? e : window.event;
 if(myevent.ctrlKey||myevent.altKey)
 {
  if(isNS){return false;}else{event.cancelBubble=true; return false; };
 }
 else
 {
  return true;
 } 
}
  
document.oncontextmenu = mischandler;
document.onkeydown = keyhandler;
document.onkeypress = keyhandler;
document.onkeyup = keyhandler;
document.onmousedown = mousehandler;
document.onmouseup = mousehandler;

//Einde Script verbergen
//-->