"

From 2014.igem.org

var $ = jQuery.noConflict(); $(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"}); }); });