<meta http-equiv="expires" content="-1">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="MSThemeCompatible" content="Yes">
<meta http-equiv="Cache-Control" content="no-cache">或：header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="MSThemeCompatible" content="Yes">
<meta http-equiv="Cache-Control" content="no-cache">或：header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
<head>
<title>书籍分类</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="expires" content="wed, 26 Feb 1997 08:21:57 GMT">
</head>
<body background="Image/bg.gif" bgcolor="#FFFFFF"
text="#000000" link="#0099FF" vlink="#003399" alink="#999933">';