[jQuery] just started using jQuery today

[jQuery] just started using jQuery today


I was following the training, and .. stucked on the very begining of
the page.
<html>
<head>
    <script type="text/javascript" src="jquery-1.2.6.js"></script>
    <script type="text/javascript">
        $(document).ready(function(){
            alert("hello");
        });
        $("a").click(function(event){
            alert("Thanks for visiting!");
            event.preventDefault();
        });
    </script>
</head>
<body>
<a href="http://jquery.com/">jQuery</a>
</body>
</html>
The message "hello" appear when the page is opened, but nothing
happens when I click the link.