D3 Examples - Make one element cover another proportionately

xxxxxxxxxx
 
<!doctype html>
<html>
<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="main.css">
</head>
<body>
    <div class="container">
        <img src="https://phaseoneimageprofessor.files.wordpress.com/2013/07/iqpw29_main_image_.jpg" alt="">
    </div>
​
    <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
    <script src="coverElement.js"></script>
​
    <script>
    $(window).load(function() {
        $container = $('.container'); //$('html'); //Use html to fit in viewport
        $img = $container.find('img');
​
        $img.coverElement({
            container: $container //Can be element, jQuery object or selector
        });
    });
    </script>
</body>
</html>
    