if (top.location != location) top.location.href = location.href; 


  function Enlargement(MyID) { 
    WinWide = 500
    WinTall = 450
    PosLeft = (screen.availWidth /2) - (WinWide /2) ;
    PosTop = (screen.availHeight /2) - (WinTall /2) ;
    xWin = window.open('pictures.cgi?pic=' + MyID,
                       'MyWin1',
                       'scrollbars=no,resizable=yes,left=' + PosLeft + ',top=' + PosTop + ',width=' + WinWide + ',height=' + WinTall);
    xWin.focus();
  }