var ErrMsg = "SORRY  THIS  TASK  IS  DISABLE  FOR  THIS  PAGE :) :)";

function disableRightClick(btnClick)
{
if (navigator.appName == "Netscape" && btnClick.which == 3) // check for netscape and right click
{ 
alert(ErrMsg);
return false;
}
else if (navigator.appName =="Microsoft Internet Explorer" && event.button == 2) // for IE and Right Click
{
alert(ErrMsg);
return false;
}
}
document.onmousedown = disableRightClick;

//************************************************************************************************************//

<!--
// if (document.layers) document.captureEvents(Event.KEYPRESS); // needed if you wish to cancel the key

document.onkeydown = keyhandler;
function keyhandler(e) {
  if (document.layers)
	   Key = e.which;
  else
       Key = window.event.keyCode;

if (Key == 8)
 {	  
alert("Please Select Text with mouse, delete with delete key and rewrite, Backspace is disabled." );
//alert("KeyCode" + Key );
event.keyCode=0;
	  return false;
	  }


  if (Key == 93|| Key == 17|| Key == 18|| Key == 116|| Key == 122)  
//if (Key != 0)
      {
	  
alert("SORRY  ALL  ARE  RESERVED  TO  COPY   or  SAVE:) :)" );
//alert("KeyCode" + Key );
event.keyCode=0;
	  return false;
	  }
//	window.close()
}
//-->