Add class to li if content is a certain string
<p>Would it be possible to add a certain class to a li that contains a certain string of text using JavaScript/<a href="http://i.stack.imgur.com/sGhaO.gif" rel="nofollow">jQuery</a>? </p>

<p>UPDATE/NEW QUESTION:
Instead of detecting the content of the li, can I have it add the class if the li has another specified class?</p>
