var isNS = (navigator.appName == "Netscape") ? 1 : 0;
  if(navigator.appName == "Netscape") document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
  function mischandler(){
  alert('راست کلیک بر روی آگهی ممنوع است');
   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 noRightClick(e)
{
 e.oncontextmenu = mischandler;
 e.onmousedown = mousehandler;
 e.onmouseup = mousehandler;
 
}