function popUpWindow(jpgName, winwidth, winheight)
{
  winwidth -= 5;
  winheight -= 5;
  URLStr = "/js/popup.html?" + jpgName;
  popUpWin = window.open(URLStr,'windowframe','width=' + winwidth + ',height=' + winheight + ',top=150,left=150,directories=no,location=no,menubar=no,scrollbars=no,status=no,toolbar=no,resizable=no');
}