SO fiddle
Test Fiddle mainly for SO Questions
by Nick Craver
HTML
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<div><dd>hello world</dd></div>
CSS
div { padding: 10px; border: solid 1px #ddd; }
dd { padding: 10px; border: solid 1px red; }
JavaScript
$("dd").replaceWith(function() { return $(this).contents(); });