Can someone find an error with this code?
<p>When I run this code in the browser, it says that there is no 'fadeIn' method. Is there a reason to it?</p>

<pre><code>&lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"&gt;&lt;/script&gt;
&lt;script type="text/javascript"&gt;
    function showDiv1() {
        $("#blackback").fadeIn(500);
        $("#contactform").fadeIn(500);
        $("#blackback").click(function () {
            hideDiv1();
        });
    }
    function hideDiv1() {
        $("#blackback").fadeOut(500);
        $("#contactform").fadeOut(500);
    }
&lt;/script&gt;
</code></pre>

<p>Thanks!</p>
