What do I need to download to run jquery

What do I need to download to run jquery

This wasn't enough to run the example at

http://jqueryui.com/demos/button/default.html

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>

I didn't bother to download the libraries manually


  1. <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8" />
        <title>jQuery UI Button - Default demo</title>

       
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
    <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
        <script type="text/javascript">
       
       
       
        $(function() {
            $("button, input:submit, a", ".demo").button();
           
            $("a", ".demo").click(function() { return false; });
        });
        </script>
        <style>
           
        </style>
    </head>
    <body>

    <div class="demo">

        <button>A button element</button>

       
        <input type="submit" value="A submit button"/>
       
        <a href="#">An anchor</a>

    </div><!-- End demo -->



    <div class="demo-description">

    <p>Examples of the markup that can be used for buttons: A button element, an input of type submit and an anchor.</p>

    </div><!-- End demo-description -->


    </body>
    </html>