javascript - how to do this style slide navigation? -

Example: Main navigation is "one", "two", "three", "four"

example. Under the main navigation "A", the navigation "Navigation is welcome to our site" "two 1", "two 2", "two 3", "two 4" two, "three 1", "three times main Begus "three" for the Navy

Now, I should look at the mouse hover one, "Welcome to our site" shows in a blcok.The block shows only "one" baby navigation , When two on the hover, "two1", "two2", "two3", "two4", the same block in the show. These blocks only show "two" child nav, then "three" Hover over. Similar to above.

Can I use jquery or javascript to get it?

If you want to use JavaScript, here is an example