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