<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
<script type="text/javascript">
    // messages to switch between
    var messages = ["i hate will", "will is lame", "lololol", "penis"];
    // function for applying a new message
    function new_message() {
        var message =  messages[Math.floor(Math.random() * messages.length)];
        // set the message
        $('#fade').fadeOut("slow", function(){
            $('#fade').html(message);
            $('#fade').fadeIn("slow").html();
        });
    }
    // register the function to run every x milliseconds (10000 = 10 sec):
    setInterval('new_message()', 10000);
</script>