想把google的Website Translator功能加入到论坛上，该在哪插代码?thanks

想把google的Website Translator功能加入到论坛上，该在哪插代码?
  它的说明是用html页面做例子的，但discuz就只有php文件，在哪插入这2段代码呢？

Paste this code onto your websiteCopy and paste the following code snippets onto every page you want to translate
Place this meta tag before the closing </head>
<meta name="google-translate-customization" content="f1420534e0ab1762-49ac98a6e62e463f-gc0643139efe64a4e-10"></meta>

Place this snippet where you'd like to display the Website Translator plugin on your page

<div id="google_translate_element"></div><script type="text/javascript">
function googleTranslateElementInit() {
  new google.translate.TranslateElement({pageLanguage: 'zh-CN', includedLanguages: 'en,ja,ko,th,vi,zh-TW', layout: google.translate.TranslateElement.FloatPosition.TOP_LEFT, multilanguagePage: true}, 'google_translate_element');
}
</script><script type="text/javascript" src="//translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script>