function right(e) {
	var msg = "Sorry, you don't have permission to right-click.";
	if (navigator.appName == 'Netscape' && e.which == 3) {
	alert(msg);
	return false;
	}
	if (navigator.appName == 'Microsoft Internet Explorer' && event.button==2) {
	alert(msg);
	return false;
	}
	else return true;
	}
	
	function trap() 
	  {
	  if(document.images)
	    {
	    for(i=0;i<document.images.length;i++)
	      {
	      document.images[i].onmousedown = right;
	      document.images[i].onmouseup = right;
	      }
	    }
	  }