jquery eventually stops working
<p>I am making a dropdown menu with the following script, the dropdown effect works the first few mouse hovers but then stops working, any ideas? thanks!</p>

<pre><code>$(document).ready(function(){  

    $("ul.topnav li").hover(function() { 
        $(this).children().fadeIn(800); 
    },
    function() { 
        $(this).find("ul.subnav").stop().fadeOut(800);
    }) 

});  
</code></pre>
