var closetimer = 0; var menuitem = 0;
function closeMenu() { if (menuitem) { menuitem.slideUp('fast'); } }
$(document).ready(function() {
    $('#nav > li').bind("mouseover", function(e) {
        if (closetimer) { window.clearTimeout(closetimer); closetimer = null; }
        if (menuitem && menuitem.get(0) != $(this).children('ul').get(0)) { menuitem.slideUp('fast'); }
        menuitem = $(this).children('ul');
        menuitem.slideDown('fast');
    });
    $('#nav > li').bind("mouseout", function(e) { closetimer = window.setTimeout(closeMenu, 500); });
});