$('a').click(function (event) 
{ 
     event.preventDefault(); 
     //here you can also do all sort of things 
});

<script type="text/javascript">
    $(document).ready(function() {
        $("#clickme").click(function() {
            alert("clicked!");
        });
        $("#clickme").click(function() {
            alert("I concur, clicked!");
        });
    });
</script>