JSFiddle - React, Tailwind, and code Playground

HTML

<div id="tabs">

    <div id="tab-1">
        <h3>Tab 1</h3>
        <p>Some content</p>
        <iframe width="420" height="150" src="http://www.youtube.com/embed/0FWL8ljUSv0" frameborder="0" allowfullscreen></iframe>
    </div>

    <div id="tab-2">
        <h3>Tab 2</h3>
        <p>Some content</p>
        <iframe width="420" height="150" src="http://www.youtube.com/embed/iGsWDBVRs_M" frameborder="0" allowfullscreen></iframe>
    </div>

    <div id="tab-3">
        <h3>Tab 3</h3>
        <p>Some content</p>
        <iframe width="420" height="150" src="http://www.youtube.com/embed/0FWL8ljUSv0" frameborder="0" allowfullscreen></iframe>
    </div>

    <div id="tab-4">
        <h3>Tab 4</h3>
        <p>Some content</p>
        <iframe width="420" height="150" src="http://www.youtube.com/embed/iGsWDBVRs_M" frameborder="0" allowfullscreen></iframe>
    </div>

<ul>
    <li><a id="0"  href="#tab-1">Tab One</a></li>
    <li><a id="1" href="#tab-2">Tab Two</a></li>
    <li><a id="2" href="#tab-3">Tab Three</a></li>
    <li><a id="3" href="#tab-4">Tab Four</a></li>
</ul>

</div> <!-- end tabs -->

CSS

/* ---------- Based upon 'reset.css' in the Yahoo! User Interface Library: http://developer.yahoo.com/yui ---------- */
*, html, body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, form, label, fieldset, input, p, blockquote, th, td { margin:0; padding:0 }
table { border-collapse:collapse; border-spacing:0 }
fieldset, img { border:0 }
address, caption, cite, code, dfn, em, strong, th, var { font-style:normal; font-weight:normal }
ol, ul, li { list-style:none }
caption, th { text-align:left }
h1, h2, h3, h4, h5, h6 { font-size:100%; font-weight:normal }
q:before, q:after { content:''}

strong { font-weight:bold }
em { font-style:italic }
a img { border:none } /* Gets rid of IE's blue borders */

sup { font-size: 50%; }

a, a:hover { text-decoration: none; }


body {
    font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
    font-weight: 100%;
    font-size: 12px;
    line-height: 1.4em;
    color: #3d3e41;
    margin: 50px 0; /* Temporary margin to push down the form */
}

#tabs {
font-size: 90%;
margin: 20px 0;
width: 520px;
margin: 0 auto;

}
#tabs ul {
float: left;
background: #E3FEFA;
width: 100%;
padding-top: 4px;
}
#tabs li {
margin-left: 8px;
list-style: none;
}
* html #tabs li {
display: inline; /* ie6 double float margin bug */
}
#tabs li,
#tabs li a {
float: left;
}
#tabs ul li a {
text-decoration: none;
padding: 8px;
color: #0073BF;
font-weight: bold;
}
#tabs ul li.active {
background: #CEE1EF url(img/nav-right.gif) no-repeat right top;
}
#tabs ul li.active a {
background: url(img/nav-left.gif) no-repeat left top;
color: #333333;
}
#tabs div {
background: #CEE1EF;
clear: both;
padding: 20px;
min-height: 200px;
}
#tabs div h3 {
text-transform: uppercase;
margin-bottom: 10px;
letter-spacing: 1px;

#tabs div p {
line-height: 150%;
}

JavaScript

var urls = new Array ("http://www.youtube.com/embed/0FWL8ljUSv0",
    "http://www.youtube.com/embed/iGsWDBVRs_M",
        "http://www.youtube.com/embed/0FWL8ljUSv0",
          "http://www.youtube.com/embed/iGsWDBVRs_M" );
var currentTab = '';

$(document).ready(function() {

    var $tabs = $('#tabs div');
    $tabs.hide();
    var index = Math.floor($tabs.length * Math.random());
    $tabs.eq(index).show();
    $('#tabs ul li').eq(index).addClass('active');
    $('#tabs ul li a').click(function() { //When any link is clicked
        
        if (currentTab == '') {
            //Find current tab:
            currentTab = $('#tabs ul li.active').find('a').attr('href');
        }
        
        //Stop playing video:
        if (currentTab != '')
            $('div#' + currentTab).find('iframe').attr('src', '');
        
        $('#tabs ul li').removeClass('active'); // Remove active class from all links
        $(this).parent().addClass('active'); //Set clicked link class to active
        currentTab = $(this).attr('href'); // Set variable currentTab to value of href attribute of clicked link
        $('#tabs div').hide(); // Hide all divs
        var index = $(this).attr('id');
        $('div#' + currentTab).find('iframe').attr('src', urls[index]);
        $(currentTab).show(); // Show div with id equal to variable currentTab
        return false;
    });
});