$("#menu-categories").animate({height: "toggle", width: "toggle"} - Problem

$("#menu-categories").animate({height: "toggle", width: "toggle"} - Problem

Heyho!

i got a problem with a selfcoded Wordpress theme in which i use JQuery for all that nice stuff. And i got a problem, where i do not know where it is nor how toe fix it. Maybe you can help me? :)

First of all, the problem is here on that homepage: http://nick.jaussi.eu/portfolio/

If you move the mouse too fast over the menu (sometimes several times in a row) the menu does not slide open anymore. Or it opens half or just some pixeles. Only a refresh of the page resolve the problem temporarily.

I thought it must work with queue: false, but it does not. So do you know any better ways to solve this?
Thanks! 
  1. $("#menu-top").mouseenter(function() { $("#menu-categories").animate({ height: "toggle", width: "toggle" }, { queue: false, duration: 350, easing: "easeInOutExpo" }); });
  2.  $("#menu-top").mouseleave(function() { $("#menu-categories").animate({ height: "toggle", width: "toggle" }, { queue: false, duration: 350, easing: "easeInOutExpo" }); });
 Thanks a lot!
 t:a