<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
$("input").click(function(){
$("span").append("<img src=\"img/before.png\">");
});
$("img").live("mouseover",function(){
$(this).attr("src","img/after.png");
}).live("mouseout",function(){
$(this).attr("src","img/before.png");
});
});
</script>
<style>
img{
cursor:pointer;
margin:0 5px 5px 0;
}
</style>
</head>
<body>
<p><input type="button" value="click"></p>
<span></span>
</body>
</html>