$(document).ready(function()
{
    $("ul.subnav").parent().append("<span></span>"); //Only shows drop down trigger when js is enabled - Adds empty span tag after ul.subnav
    $("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().hover(function()
        {
        }, function()
        {
            $(this).parent().find("ul.subnav").slideUp('fast'); //When the mouse hovers out of the subnav, move it back up
        });
        //Following events are applied to the trigger (Hover events for the trigger)
    });
});