рони,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
.img img {
width: 100px;
height: 100px;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(window).on("load", function() {
$(".img img").each(function(e, a) {
a = $(a);
var b = a.height(),
c = a.width(),
d = [{
height: b,
width: c
}, {
height: 7 * b,
width: 7 * c
}];
a.on("click", function() {
a.stop().animate(d.reverse()[0], 3E3)
})
});
$(".img img").on("mouseenter mouseleave", function() {
$(this).trigger('click');
});
});
</script>
</head>
<body>
<p class="img">
<img src="http://www.newyork.ru/ic/images.newsru.com/pict/id/large/796764_20051013122324.gif" alt="" />
</p>
</body>
</html>