function bookwindow(bookURL)     {
    bookwin=window.open(bookURL,'book','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=480,height=550');
    bookwin.focus();
  }

  function amazonwindow(url,name) {
    amznwin=window.open(url,name,'location=yes,scrollbars=yes,status=yes,toolbar=yes,resizable=yes,width=380,height=450,screenX=10,screenY=10,top=10,left=10');
    amznwin.focus();
  }