HTML,CSS：用“,“或`code`显示HTML代码？

鉴于html如：

<xmp>
<div data-role="page" data-theme="b">
    <header></header>
    <div data-role="content">
            <ul data-role="listview" data-filter="true">
                <li><a href="index.html">Some</a></li>
                <li><a href="index.html">random</a></li>
                <li><a href="index.html">content</a></li>
                <li><a href="index.html">With a very long annoying line which naturally goes roge by going outside the main windows and requesting scrolling. So childish !</a></li>
            </ul>
    </div>
    <footer></footer>
</div><!-- page end-->
<script>      
someJS(parameter) { 
  $('header').append('hello!');
}
</script>
</xmp>

见working fiddle

我的一条线很长,所以需要大量的水平滚动.
如何在< xmp>上进行分词(强制线跳转) ？

我希望在没有解析或滚动的情况下显示代码(html,JS).

[1]：相关：Is there a HTML/CSS way to display HTML tags without parsing?(建议没有解决方案的xmp断线)

编辑：解决方案http://jsfiddle.net/hucY9/5/

xmp { white-space: pre-wrap }