Hello, The hover class needs to be sfHover with an uppercase H. This bites people occasionally which is why I added it to the "Troubleshooting" section of the Superfish docs. Hopefully if you fix that your menu will work, let us know if not.
Alternatively, if you prefer to use your current spelling you can pass
it in via the options object like so:
$(document).ready(function(){
$('#nav').superfish({ hoverClass:'sfhover' });
});
Joel Birch.
