$(document).ready(function() {

$("ul#topnav li").hover(function() { //Hover over event on list item

$(this).css({ 'background' : '#999999'}); //This changes the mouseover color of the top menu...Cooresponds to the "ul#topnav li:hover" style in the .css

$(this).find("span").show(); //Show the subnav

} , function() { //on hover out...

$(this).css({ 'background' : 'none'}); //Ditch the background

$(this).find("span").hide(); //Hide the subnav

});

});