$(document).ready(function () {
$('#menu > li').bind('mouseover', msieMouseover);
$('#menu > li').bind('mouseout', msieMouseout);
});

menuTimeout = null;

function msieMouseover(event) {
 clearTimeout(menuTimeout);
 $('#menu ul').css('display', 'none');
 $('ul', this).css('display', 'block');
}

function msieMouseout(event) {
 menuTimeout = setTimeout("$('#menu ul').fadeOut('fast')", 1000);
}