使用方法：
<script src='http://code.jquery.com/jquery-1.10.2.min.js'></script>
<script src='jquery.museum.js'></script>
<script>
$(document).ready(function() {
$.museum($('#content img'));
});
</script>
<script src='http://code.jquery.com/jquery-1.10.2.min.js'></script>
<script src='jquery.museum.js'></script>
<script>
$(document).ready(function() {
$.museum($('#content img'));
});
</script>