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