SO image over navbar
HTML
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/css/bootstrap-combined.min.css">
<script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/js/bootstrap.min.js"></script>
<script src=" http://twitter.github.com/bootstrap/assets/js/bootstrap-tooltip.js"></script>
<nav class="navbar navbar-inverse">
<div class="navbar-inner">
<ul class="nav">
<li><a href="#">link 1</a></li>
<li class="active"><a href="#">link 2</a></li>
<li><a href="#">link 3</a></li>
<li><a href="#">link 4</a></li>
</ul>
</div>
</nav>
<div class="container mypic">
<img src="https://mindbodyfuel.com/images/d39f3565-098e-4b7c-991e-0caf1874a487.jpeg" />
</div> <!-- end container -->
CSS
.mypic {
margin: -120px 0 -20px 10px; /* play with these to position the image */
position:absolute;
z-index:100;
width:300px;
}