[monolithed]

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js" type="text/javascript"></script>
<div class="sites_actions">click</div>

<script type="text/javascript">
$(function(){
    $('.sites_actions').click(function(){
        $(this).removeClass().addClass('sites_info');
        alert($(this).attr('class'));
    });
});
</script>