JSFiddle - React, Tailwind, and code Playground

HTML

<div><img /></div>
<div><img /></div>

CSS

div {
    width: 100px;
    height: 100px;
    background: red;
}
div:hover {
    background: url(http://dl.dropbox.com/u/3935026/central_bg_hover.gif);    
}

JavaScript

$('div').mouseover(function() {
    $('img', this).attr('src', 'http://dl.dropbox.com/u/3935026/central_bg_hover.gif');
});