var oLastBtn=0;
  bIsMenu = false;
  //Deshabilitar el botón derecho del mouse
  if (window.Event) document.captureEvents(Event.MOUSEUP); 
  function nocontextmenu()
  { event.cancelBubble = true
    event.returnValue = false;
    return false;
  }
  function norightclick(e)
  { if (window.Event)
    { if (e.which !=1)
      return false;
    }
    else if (event.button !=1)
    { event.cancelBubble = true
      event.returnValue = false;
      return false;
    }
  }
  document.oncontextmenu = nocontextmenu;
  document.onmousedown = norightclick;

  //Deshabilitar BackSpace
  function onKeyDown()
  { if ( (event.altKey && event.keyCode == 37) || ((event.keyCode == 8) && (event.srcElement.type != "text" &&
     event.srcElement.type != "textarea" && event.srcElement.type != "password")) || 
      ((event.ctrlKey) && ((event.keyCode == 78) || (event.keyCode == 82)) ) ||	(event.keyCode == 116) )//(event.altKey) ||
    { event.keyCode = 0;
      event.returnValue = false;
    }
	if (event.keyCode=='\n000123') {event.keyCode='9'}
  }
 //-->