JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>

<div class="a">Test MouseEnter here</div>
<div class="b">Test MouseOver here</div>

CSS

div {color:#c00; margin-bottom:20px;}
div:hover {color:#f00; background:#eee;}

JavaScript

jQuery('div.a').live('mouseenter', function (e) {jQuery("body").append('<p>MouseEnter</p>');});
jQuery('div.b').live('mouseover', function (e) {jQuery("body").append('<p>MouseOver</p>');});