语法高亮，滚动条美化，设置页面调整

docs/javascript/Reference/Global_Objects/Object/eval.html

@@ -2,7 +2,7 @@
 <div> <div class="blockIndicator obsolete obsoleteHeader"><p><strong><span class="icon-only-inline" title="This is an obsolete API and is no longer guaranteed to work."><i class="icon-trash"> </i></span> 已废弃</strong><br/>This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.</p></div></div>
 <p><code><strong>Object.eval()</strong></code> 方法用于在对象的上下文中对 JavaScript 代码字符串求值，但该方法已被移除。</p>
 <h2 id="语法">语法</h2>
-<pre class="syntaxbox"><code><var>obj</var>.eval(<var>string</var>)</code></pre>
+<pre><code class="language-javascript"><code><var>obj</var>.eval(<var>string</var>)</code></code></pre>
 <h3 id="参数">参数</h3>
 <dl>
 <dt><code>string</code></dt>