JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="foo"><!DOCTYPE HTML>
<html lang="en" class="no-js">
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
        <title>GSD&amp;M | ideacity</title>
        <meta name="viewport" content="width=576; initial-scale=1.0; maximum-scale=1.0;">
        <link rel="shortcut icon" href="/favicon.ico">
        <link rel="apple-touch-icon" href="/apple-touch-icon.png">
        <link rel="stylesheet" href="css/style.css">
        <link rel="stylesheet" href="css/video.css">
        <link rel="stylesheet" href="css/video-ui.css">
        <script src="js/modernizr-1.5.min.js"></script>
    </head>
    <body id="default">

        <!-- SITEMAP -->
        <a href="javascript:void(0);" id="sitemap-opener">Sitemap</a>
        <div id="sitemap">
            <a href="javascript:void(0);" id="sitemap-closer">&#215;</a>
            <ol class="clearfix">
                <li><a href="javascript:void(0);">Home</a></li>
                <li>
                    <a href="javascript:void(0);">Work</a>
                    <ul>
                        <li><a href="javascript:void(0);">Air Force</a></li>
                        <li><a href="javascript:void(0);">BMW</a></li>
                        <li><a href="javascript:void(0);">NCL</a></li>
                        <li><a href="javascript:void(0);">Ace</a></li>
                        <li><a href="javascript:void(0);">Kohler</a></li>
                        <li><a href="javascript:void(0);">Compass</a></li>
                        <li><a href="javascript:void(0);">Marshalls</a></li>
                        <li><a href="javascript:void(0);">Caesars</a></li>
                        <li><a href="javascript:void(0);">LL Bean</a></li>
                        <li><a href="javascript:void(0);">Southwest Airlines</a></li>
                        <li><a href="javascript:void(0);">John Deere</a></li>
                        <li><a href="javascript:void(0);">ATT</a></li>
        ...

JavaScript

var text = document.id("foo").get("value");

new Request.HTML({
    url: '/echo/html/',
    data: {
        html: text,
        delay: 0
    },
    method: 'post',
    onComplete: function() {
        var panel, elTemp = $$(this.response.elements).filter(function(el) {
            return $(el) && el.get && el.get("id") == 'sitemap';
        });
        if (elTemp.length)
            panel = elTemp[0];
        
        alert(panel.id);
    }
}).send();