[jQuery] jQuery Navigation problems

[ZKM]

I have a website that has very large UL navigation created with jQuery
and every time you goto the page it flashes the entire UL for a split
of a second. So what I want to do is find a way to make it to do I
think is hide the UL until the CSS and jQuery is loaded than display
the menu. If anyone has a better idea I am all ears and I am also new
to jQuery but catching on fast.