jQuery(document).ready(function($) {
    
		/* for top navigation */
		$(" #menu ul ").css({display: "none"}); // Opera Fix
    
		$(" #menu li").hover(function(){
      $(this).find('ul:first').css({visibility: "visible",display: "none"}).slideDown(400);
      },function(){
        $(this).find('ul:first').css({visibility: "hidden"});
		});
        
    
})(jQuery);