$(document).ready(function () {

    $("ul.topnav li a").mouseover(function () { //When trigger is clicked...

        //Following events are applied to the subnav itself (moving subnav up and down)
        $(this).parent().find("ul.subnav").slideDown('fast').show(); //Drop down the subnav on click

        $(this).parent().mouseleave(function () {
            $(this).parent().find("ul.subnav").slideUp('slow'); //When the mouse hovers out of the subnav, move it back up
        });

        //Following events are applied to the trigger (Hover events for the trigger)
    }).mouseover(function () {
        $(this).addClass("subhover"); //On hover over, add class "subhover"
    }).mouseleave(function () {	//On Hover Out
        $(this).removeClass("subhover"); //On hover out, remove class "subhover"
    });

});