Yes, there is Intro.js which is good: you simply add attributes to your tags like so:
<div class="span6" data-step="2" data-intro="Ok, wasn't that fun?" data-position='right'>
<h4>Section One</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis mollis augue a neque cursus ac blandit orci faucibus. Phasellus nec metus purus.</p>
<h4>Section Two</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis mollis augue a neque cursus ac blandit orci faucibus. Phasellus nec metus purus.</p>
<h4>Section Three</h4>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Duis mollis augue a neque cursus ac blandit orci faucibus. Phasellus nec metus purus.</p>
</div>