$(document).ready(function() {

  // Hover emulation for IE 6.
  if ($.browser.msie && parseInt(jQuery.browser.version) == 6) {
    $('#nav li').hover(function() {
      $(this).addClass('iehover');
    }, function() {
      $(this).removeClass('iehover');
    });
  }

  // Delayed mouseout.
  $('#nav li').hover(function() {
    // Stop the timer.
    clearTimeout(this.sfTimer);
    // Display child lists.
    $('> ul', this).css({left: 'auto', display: 'block'})
      // Immediately hide nephew lists.
      .parent().siblings('li').children('ul').css({left: '-999em', display: 'none'});
  }, function() {
    // Start the timer.
    var uls = $('> ul', this);
    this.sfTimer = setTimeout(function() {
      uls.css({left: '-999em', display: 'none'});
    }, 400);
  });
});