var popUpWin=0;
	
	function popUpWindow(URLStr, left, top, width, height, scb)
	{
	  if(popUpWin)
	  {
		if(!popUpWin.closed) popUpWin.close();
	  }
	  popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menub ar=no,scrollbars='+scb+',resizable=yes,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
	  
	  return false;
	}