jQuery(function(){
        $('.main-menu ul').superfish({ 
            delay:       500,                            // one second delay on mouseout 
            animation:   {opacity:'show',height:'show'},  // fade-in and slide-down animation 
            speed:       250,                          // faster animation speed 
            autoArrows:  false,                           // disable generation of arrow mark-up 
            dropShadows: false                            // disable drop shadows 
        }); 
});