Testing for mouse hover and setInterval

Question

I am trying to build a drop down menu that gets closed after
a count, rather then directly after roll out.
My button roll over function tells the menu to open. When I
roll out of the button or any of the submenu buttons, I want the
timer to count down for about a second, before closing my sub menu.
How do I do that and how do I reset the count, if the user rolls
back over one of the buttons button?
Thanks a lot for the help!

Answer 1

yeah this could be done with setInterval, and you don't need
to 'reset' a count this way, if a user rolls over again, just make
sure the interval is cleared. it would set up something like this: