[danik.js]

<img src="http://img.12pings.net/wallp/optical_illusion_abstract_1280x800.jpg">
<script src="//code.jquery.com/jquery-latest.js"></script>
<script>
    $('img').width(90).hover(function(){
        $(this).stop().animate({width: 150});
    },
    function(){
        $(this).stop().animate({width: 90});
    });
</script>