Strange behaviour hover

Strange behaviour hover

Hello everyone,

I'm a beginning web developer with a good knowledge of html and css and beginning to get the hang of jQuery but this time google has let me down in finding the problem so I turn to you :-)

I'm having a hard time finding the solution to the following problem:

On this website: cobeco.truvowebagency.be you will see a menu on the left side that on hover, will slide down a second menu next to its parent menu and so on. (The second and sixth menuitem have a second menu.)

It all works good but when you move with your mouse over the second menu straight to the third (fast) the menu slides down but stays down on the third menuitem, when you move your mouse to the second menuitem it slides back up doing the opposite of what its supposed to do??

Anyone know what is causing this behaviour? I tried mouseenter and mouseleave but to no succes (or faulty writing) cause the menu didnt slide down at all then.

Greetings,

Stefan