yeah sure, so first you need to paste this before the meta tags:

<link href=’http://static.tumblr.com/qxlvltu/H6zmrzzjl/chentrada.css’ media=’screen’ rel=’stylesheet’/>

and then to use it you do it like this:

<div class=”CHentrada”>

your menu code here, or anything you want to put the effect in

</div>

done (: