var showWin = null;
    function show(urlen,wid,hig) {
      if (showWin != null) {
        if (!showWin.closed) {
          showWin.close();
        }
      }
      if (showWin == null) {
        showWin = window.open('pop.html?img='+urlen,"",'toolbar=0,location=0,top=0,left=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width='+wid+',height='+hig+',dependent=yes');
      }
    }