var popUpWin=0;
		function popWin(URLStr, left, top, width, height)
		{
		  if(popUpWin)
		  {
		    if(!popUpWin.closed) popUpWin.close();
		  }
		  popUpWin = open(URLStr, 'popUpWin', 'scrollbars=1,resizable=1,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
		}