jquery fade and slide simultaneously

idk if this helps or not, but you can skip the slideUp and fadeIn shortcuts and just use animate:

http://jsfiddle.net/bZXjv/

$('#anotherDiv').hover(function() {
    $('#myDiv')
        .stop(true, true)
        .animate({
            height:"toggle",
            opacity:"toggle"
        },slideDuration);
});